A child pulls a toy car through a distance of 10 meters on a smooth, horizontal floor. The string held in the child's hand makes an angle of $ 60^{\circ} $ with the horizontal surface. If the force applied by the child be $ 5 \mathrm{~N} $, calculate the work done by the child in pulling the toy car.

Here given, applied force $F=5\ N$

Distance travelled $s=10\ meters$

The angle between the direction applied force and displacement $\theta=60^{\circ}$

Work done by the child is pulling the toy car $W=Fs\cos60^{\circ}$

$=5\times10\times\frac{1}{2}$

$=25\ Joule$

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Updated on: 10-Oct-2022

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