Q.
A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 joules, the angle which the force makes with the direction of motion of the body is
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a
0°
b
30°
c
60°
d
90°
answer is C.
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Detailed Solution
W=Fscosθ ⇒cosθ=WFs=2550=12 ⇒θ=60°
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