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Home › Physics › Simple Machines

Simple Machines — Physics Questions & Practice

Practise 9 Simple Machines questions from Physics for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong.

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Practice questions on Simple Machines — with answers

Try each question first, then open the answer. Explanations are included.

1. What is a simple machine that consists of a rigid bar pivoted at a fixed point (fulcrum), used to lift loads?

  1. ALever
  2. BInclined plane
  3. CWedge
  4. DPulley
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Answer: A

A lever is a rigid bar that pivots around a fixed point (fulcrum), used to amplify force for lifting or moving loads.

2. What is a simple machine consisting of a wheel attached to a rod (axle), used to reduce the force needed to move an object?

  1. ALever
  2. BPulley
  3. CScrew
  4. DWheel and axle
Show answer

Answer: D

A wheel and axle consists of a wheel attached to a smaller rod (axle); rotating the wheel rotates the axle, reducing the force needed to do work.

3. What term describes the ratio of the distance moved by the effort to the distance moved by the load in a machine?

  1. ALoad ratio
  2. BVelocity ratio
  3. CEfficiency
  4. DMechanical advantage
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Answer: B

Velocity ratio is the ratio of the distance moved by the effort to the distance moved by the load in a simple machine.

4. What is a simple machine consisting of a wheel with a grooved rim, used to change the direction of a force?

  1. AScrew
  2. BWheel and axle
  3. CLever
  4. DPulley
Show answer

Answer: D

A pulley is a wheel with a grooved rim over which a rope or cable runs, used to lift loads by changing the direction of the applied force.

5. In a lever, what is the fixed point around which the lever rotates called?

  1. APivot arm
  2. BFulcrum
  3. CEffort
  4. DLoad
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Answer: B

The fulcrum is the fixed point or support around which a lever rotates.

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