A block of ice is drawn through a distance 500 cm along a smooth horizontal surface. The pull in the rope in 100 dyne and the angle between the rope and ground in 30°. Find the work done.

Dear Nisha,

 Work done = component of the force parallel to the displacement ´ displacement

                                          = F cos(theta) * s = 100 cos 30 °´ 500 = 43300 erg.

Since displacement depends on reference frame, hence work also depends on the reference frame.

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