A body of mass 5 kg is placed at the origin, and can move only on the x-axis. A force of 10N is acting on it in a direction making an angle of $60^{0}$ with the axis and displaces it along the x-axis by 4 metres. The work done by the force is

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Solution

Angle between force and displacement $θ = 60^{o}$
Given : $F = 10 N$ $S = 4 m$
Work done $W = F S cos θ$
$⟹ W = 10 \times 4 \times cos 60 = 20 J$

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A body of mass 5 kg is placed at the origin, and can move only on the x-axis. A force of 10N is acting on it in a direction making an angle of 600 with the axis and displaces it along the x-axis by 4 metres. The work done by the force is

Angle between force and displacement θ=60oGiven : F=10 N S=4 mWork done W=FScosθ⟹W=10×4×cos60=20 J

A body of mass 5 kg is placed at the origin, and can move only on the x-axis. A force of 10N is acting on it in a direction making an angle of $60^{0}$ with the axis and displaces it along the x-axis by 4 metres. The work done by the force is

Angle between force and displacement $θ = 60^{o}$
Given : $F = 10 N$ $S = 4 m$
Work done $W = F S cos θ$
$⟹ W = 10 \times 4 \times cos 60 = 20 J$