A force of 50N acts on a body and the point of application of force is displaced by
10cm in the direction (i) of force, (ii) opposite to that of the force, (iii) making an angle
60
0 with the force and (iv) making an angle 120
0 with the force. Find the work done in
each case. ( given cos0
0 =1, cos60
0=0.5, cos120
0= -0.5, cos180
0= -1)
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