A rigid body moves a distance of 10m along a straight line under the action of a force of 5 N. lf the work done by this force on the body is 25 joules, the angle which the force makes with the direction of motion of the body is
0∘
30∘
60∘
90∘
A
90∘
B
0∘
C
30∘
D
60∘
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Solution
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we know, W=FScosθ cosθ=WFS
cosθ=2550
cosθ=12
θ=cos−10.5 θ=600
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