a force of 50 Newton acts on a body and moves at a distance of 4 m on a horizontal surface calculate the work done if the direction of force is an angle of 60 degree to horizontal surface. what will be value of work done if angle is 30 degree instead of 60 degree?
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Answer:
f=50
s=4
we know that
W = Fcos teeta
= 50×cos60
= 50×1/2
= 25 joules
If the angle is 30 degrees then
F = 50 × cos 30
= 50 × root 3/2
= 25root3
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