Forces, movement, shape and momentum

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Question 10
Medium

A site worker uses a heavy wheeled concrete trolley to transport wet concrete along a level pathway.

a.

State the relationship between work done, force, and distance moved.

[1]
b.

The worker pushes the trolley with a constant horizontal force of 220 N220\text{ N}220 N and moves it a distance of 45 m45\text{ m}45 m. Calculate the work done in moving the trolley.

[2]
c.

State the amount of energy transferred during this movement.

[1]
d.

The site worker stops and holds the handles of the trolley such that the frame is perfectly horizontal.

A simplified engineering diagram of a manual trolley held in a horizontal position. The pivot (a wheel) is on the left end. A vertical downward arrow representing a weight of 800 N is shown at a horizontal distance of 0.35 m to the right of the pivot. A vertical upward force F is applied at the handle on the right, located at a horizontal distance of 0.65 m to the right of the 800 N weight force arrow.

Describe where the centre of gravity of the loaded concrete trolley is located with reference to the 800 N weight arrow.

[1]
e.

State the equation linking moment, force, and perpendicular distance from the pivot.

[1]
f.

Calculate the vertical upward force FFF exerted by the worker on the handles.

[3]

Forces, movement, shape and momentum Questions

  1. IGCSE
  2. /Physics
  3. /Forces, movement, shape and momentum