A body displaced 10m under the force of 10 N . If the work doneon the body is 50 J , then the anglebetween the force and displacement will be ……..

A body displaced 10m under the force of 10 N . If the work doneon the

1.	A body displaced 10m under the force of 10 N . If the work doneon the body is 50 J , then the anglebetween the force and displacement will be ……..
Answer» `120^(@)` `90^(@)` `60^(@)` None of these SOLUTION :`W = vec(F).vec(d) = FD COS theta ` ` cos theta = W/(F.d)` ` :. K . = 0.125 J ` ` :. K/k = (0.125)/(2.5)` ` :. (K-K)/K xx100 = (2.5 -0.125)/(2.5) xx100` ` = (2.375 )/(2.5) xx100` ` = 23.75 xx4` ` = 95.00 % `