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Forces, movement, shape and momentum

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Question 18

A gardener uses a wheelbarrow to carry soil along a flat garden path.

a.

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

[1]
b.

The gardener pushes with a constant horizontal force of 150 N150\text{ N}150 N and moves the wheelbarrow 36 m36\text{ m}36 m. Calculate the work done moving the wheelbarrow.

[2]
c.

State the amount of energy transferred during this movement.

[1]
d.

The gardener stops and holds the wheelbarrow horizontally. A simplified diagram of a wheelbarrow held in a horizontal position. The pivot is at the center of the wheel on the left. A vertical downward arrow representing a weight of 450 N is shown at a horizontal distance of 0.4 m to the right of the pivot. A vertical upward force F is applied at the handles, located at a horizontal distance of 0.8 m to the right of the 450 N weight force arrow. Describe where the centre of gravity of the loaded wheelbarrow is located with reference to the 450 N weight arrow.

[1]
e.

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

[1]
f.

Calculate the upward force FFF exerted by the gardener.

[4]

Forces, movement, shape and momentum Questions

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