1.

what should be the angle between the direction of force and the direction of motion of a body so that work done is zero?​

Answer»

Answer:

Angle should be 90° between the DIRECTION of force and the direction of motion of a body as workdone is EQUAL to force .

or

F=Force ,d= Displacement ,theta =Angle

between force and displacement

W = F.D.costheta

cos90° = 0

so,in case of zero WORK, the angle between the force and displacment is 90°.



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