MECHANICS PHYSICS LAB Lab Equipment Manufacturer, Supplier and Exporter in India

Twenty-seven items are listed here, MPL-0001 to MPL-0030, and they make up the classic school and college mechanics bench: density and upthrust, forces and equilibrium, friction and the inclined plane, elasticity, rotation and inertia, and free fall. One thing is missing from every description in the listing and it is the thing that decides whether a practical can actually run: what comes with the apparatus. A force table without pulleys and weight hangers, or an inclined plane without a trolley and a set of masses, is a frame rather than an experiment. The sections below are the questions to ask, in the order that matters.

The range, by topic

Ask what is not in the box

For every code, ask the supplier to list what is supplied and what the experiment additionally needs. The usual gaps are:

• Masses and hangers. Ask whether a slotted weight set and hangers are included, in what values and to what tolerance, and how many hangers, since most of these experiments need two or three. A set of masses of unstated tolerance is fine for a demonstration and useless for a quantitative result.
• Pulleys, clamps and a stand. The Atwood machine, the force table and the inclined plane all need pulleys that turn freely, and nearly everything on this page needs a retort stand with a boss and clamp. Ask whether they come with the apparatus or must be bought separately.
• String, and a balance. A balance to weigh the masses and the apparatus is assumed by most of these experiments; ask whether one is included or whether you need a bench balance from Lab Balances and Scales.
• A storage tray or case. Small-parts apparatus disappears over a term. Ask whether a tray, a labelled case or a parts list is supplied, and ask for a spares price list, because the first thing lost is always the hangers and the pulleys.

Timing is what actually limits a mechanics result

Nearly every quantitative mechanics experiment comes down to measuring a time, and the accuracy of the answer is set by how that time is measured rather than by the quality of the frame. Ask what timing method each apparatus assumes, and whether it is supplied:

• A hand-held stopwatch is adequate for a pendulum over many swings and for a trolley over a long run. It is not adequate for free fall. A body falling a metre takes under half a second, which is the same order as human reaction time, so a free-fall experiment timed by hand cannot produce a usable value for the acceleration due to gravity. If MPL-0021 is bought for that purpose, it needs an electronic timing method, and you should ask what the apparatus is designed to work with.
• A ticker-tape timer suits trolley work such as MPL-0018 and gives the student a visible record to analyse, which is pedagogically useful. Ask whether the timer and the tape are supplied, what the tick interval is and what it is derived from, and what tape costs, since it is a consumable.
• Light gates with an electronic timer give the best results and the least argument. Ask whether gates are compatible with the apparatus, how they mount, the timer resolution, and whether gates and timer are included or separate items.
• For MPL-0021 specifically, ask how the body is released and whether the release and the timer start together, because a release mechanism that does not trigger the timer reintroduces exactly the reaction-time error the apparatus exists to remove.

Density and upthrust: the practical details

Ten codes cover this topic and they overlap considerably, so settle what each one is before ordering several. A displacement vessel and an overflow can are the same idea, and the listing carries four displacement vessels in different materials and sizes plus an overflow can (MPL-0017), so ask which single item suits your practical and buy that. For the group as a whole, ask:

• The spout. On any overflow vessel, ask whether the spout is level and smooth, because the measurement depends on filling to overflow and letting it settle before the object goes in; a dribbling or uneven spout is the commonest reason these experiments give poor results.
• The cube sets. Ask which materials MPL-0009 and MPL-0010 contain, whether each cube is marked with its material, the side length and its tolerance, and whether densities are quoted in the manual, since the point of the experiment is to identify the material from a measurement. Ask whether the hooked set (MPL-0010) is intended for suspension in water with the hydrostatic balance.
• MPL-0003 and MPL-0004. A bucket-and-cylinder set and an Archimedes cylinder are closely related classical apparatus; ask what distinguishes these two codes and whether you need both.
• Materials and life. Ask what the vessels are made of, since tin-plate corrodes where brass and glass do not, and a school buys these for a decade. Ask the same of the wooden items: whether they are sealed or varnished, which decides whether they survive a damp store.

Three safety points, proportionate to the apparatus

Nothing here is dangerous in the way a mains trainer is, but three items deserve a line in the practical sheet. Falling masses: the Atwood machine and the free-fall apparatus both end with a mass arriving at the floor, so work over a tray or a sand box, keep feet clear and do not use masses heavier than the experiment needs. Springs and elastic: on the Hooke's law and elastic materials experiments, a spring or wire stretched past its limit releases suddenly, so ask whether a limit stop is provided, specify eye protection, and set an explicit maximum load in the instructions. The guinea and feather tube (MPL-0024) is an evacuated glass tube, so ask whether a vacuum pump is included or required, what the tube is rated for, whether it is sleeved or guarded, and how it should be stored; a glass tube under vacuum that is dropped or knocked fails all at once.

Also worth confirming

Quote the code rather than the name on anything from this listing: several names are in capitals with a boilerplate suffix, some carry misspellings of the physicist the apparatus is named after, and MPL-0006, MPL-0008 and MPL-0011 are absent from the sequence, which elsewhere on this site has meant a product filed under another category rather than a product that does not exist. Ask also for the dimensions of each item, the manual with the expected result and a worked example, the quantity per student group, and the warranty. Any figure quoted is confirmed in writing on the quotation; ask for its basis.

Related ranges on this site

Fluids, pressure and flow are under Fluid Mechanics Physics Equipments. Heat, expansion and engines are under Heat and Engine Physics Lab Equipments with Thermometers. Waves and oscillations, including pendulum work, are under Physics Sound and Waves Lab. Light is under Optics Physics Lab. Circuits and cells are under Electricity and Cell Lab, magnets under Magnetism Physics Equipments, and weighing under Lab Balances and Scales. Parent range: Physics Lab Equipments.

Request a quote

Send your mechanics practical list with the number of student groups, and ask for a quote that states, against each code, what is supplied and what the experiment additionally needs. For example Fletcher's Trolley (MPL-0018) and Free Fall Apparatus (MPL-0021), eight groups, with the masses, hangers, pulleys and the timing method confirmed in writing. Contact Ray Export for prices, dimensions and lead times.

Frequently asked questions

What accessories do I need to buy with the mechanics apparatus?

Ask for each code to be quoted with what is supplied and what the practical additionally needs. The usual gaps are a slotted weight set and hangers - in what values, to what tolerance, and how many hangers, since most of these experiments need two or three; pulleys that turn freely for the Atwood machine, the force table and the inclined plane; a retort stand with boss and clamp; string; a balance to weigh the masses and the apparatus; and a tray or labelled case, because small parts disappear over a term. Ask for a spares list too.

Can the free fall apparatus MPL-0021 be timed with a stopwatch?

Not usefully. A body falling a metre takes under half a second, which is the same order as human reaction time, so a hand-timed free-fall run cannot produce a usable value for the acceleration due to gravity. If MPL-0021 is bought for that purpose it needs an electronic timing method. Ask what the apparatus is designed to work with, how the body is released, and whether the release and the timer start together - a release that does not trigger the timer reintroduces exactly the reaction-time error the apparatus exists to remove.

Which timing method suits trolley and pendulum experiments?

A hand-held stopwatch is adequate for a pendulum timed over many swings and for a trolley over a long run. A ticker-tape timer suits trolley work such as Fletcher's trolley (MPL-0018) and gives the student a visible record to analyse; ask whether the timer and tape are supplied, what the tick interval is and what it is derived from, and how tape is resupplied, since it is a consumable. Light gates with an electronic timer give the best results and the least argument - ask whether they suit the apparatus, how they mount, the timer resolution, and whether gates and timer are separate items.

Do I need every displacement vessel and density code on this listing?

Probably not. The density and upthrust group overlaps considerably: four displacement vessels in glass, tin and brass plus the overflow can (MPL-0017) are the same idea, so ask which single item suits your practical and buy that. The bucket-and-cylinder set (MPL-0003) and the Archimedes cylinder (MPL-0004) are closely related classical apparatus, so ask what distinguishes the two codes before ordering both. Whichever vessel you choose, check that the spout is level and smooth - a dribbling or uneven spout is the commonest reason these experiments give poor results.

What should I check on the metal cube sets MPL-0009 and MPL-0010?

The point of the experiment is to identify a material from a measurement, so ask which materials each set contains, whether each cube is marked with its material, the side length and its tolerance, and whether densities are given in the manual. Ask whether the hooked set, MPL-0010, is intended for suspension in water with the hydrostatic balance. And ask what the vessels used alongside are made of - tin-plate corrodes where brass and glass do not - and whether the wooden items are sealed or varnished, because a school keeps these for a decade, often in a damp store.

What safety precautions apply to mechanics apparatus?

Three, in proportion to the apparatus. The Atwood machine and the free-fall apparatus both end with a mass arriving at the floor, so work over a tray or sand box, keep feet clear and use no heavier masses than the experiment needs. On the Hooke's law and elastic materials experiments, a spring or wire stretched past its limit releases suddenly, so ask whether a limit stop is provided, specify eye protection and set a maximum load in the instructions. The guinea and feather tube (MPL-0024) is evacuated glass: ask whether a vacuum pump is required, whether it is sleeved or guarded, and how to store it.

Key takeaways

• Ask what is not in the box - masses, hangers, pulleys, stand and clamp, string, a balance and a storage tray decide whether a practical runs.
• Timing limits the result, not the frame - free fall (MPL-0021) needs an electronic method with a release that starts the timer.
• Buy one overflow vessel, not five - choose the single displacement vessel that suits your practical and check its spout.
• Cube sets need marked materials and a stated side tolerance if students are to identify a material from its density.
• Quote the code rather than the name - several names are in capitals with a boilerplate suffix and some misspell the physicist.
• Plan for lost parts - hangers and pulleys go first, so ask for a spares list and a labelled case.

About this page

Ray Export is a manufacturer and exporter of laboratory, scientific and educational equipment based at Plot No. 449, HSIIDC Industrial Area, Saha, Ambala, Haryana 133104, India. Enquiries: [email protected], +91-9817319615.

Written by Palak Mall, Senior Content Writer. Technically reviewed by Arvind Kumar, Lab Equipment Specialist, 12+ years in laboratory and testing instrumentation. Last updated: 17 October 2026.

Specifications - masses and their tolerance, cube side lengths, tick interval, timer resolution, materials and dimensions - are confirmed in writing on the quotation, together with what is supplied against each code. For certificates, standards or approvals, contact us for the latest copies of the relevant certificates. No price is quoted on this page. Listing notes: MPL-0006, MPL-0008 and MPL-0011 are absent from the sequence; several product names are in capitals with a boilerplate suffix and some misspell the name of the physicist the apparatus is named after; the density section refers to ten codes while its table lists eleven; and the inclined plane and simple inclined plane records are not distinguished in the text.