A gardener pushes a lawn roller along a straight

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A gardener pushes a lawn roller along a straight, level path while keeping the handle perfectly horizontal. (i) The gardener does

450\,\text{J}

of work in moving the roller through a distance of

15\,\text{m}

. Calculate the magnitude of the constant horizontal force applied. (ii) In a second attempt, the gardener increases the applied horizontal force by

10\%

and again moves the roller the same

15\,\text{m}

. Calculate the total work done by the force in this case.