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Work and power

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Question 3

A rectangular sample block is pushed horizontally along a guide rail in a laboratory testing rig.

The magnetic actuator exerts a constant horizontal force of 4.5 N on the block. The block is moved a distance of 0.80 m.

a.

State the equation linking work done, force, and distance.

[1]
b.

Calculate the work done in moving the block.

[1]
c.

State how much energy is transferred to the block.

[1]
d.

The guide rail suddenly hits a mechanical stopper, causing the upright block to tip over onto its broader side and come to a complete stop.

How does this affect the kinetic energy of the block once it has fully come to rest?

[1]
e.

Why does tipping over onto its broader side reduce the gravitational potential energy of the block?

[1]

Work and power Questions

  1. IGCSE
  2. /Physics
  3. /Work and power