A CHILD PULLS A TOY BUS THROUGH A DISTANCE OF 8m ON A SMOOTH HORIZONTAL FLOOR.THE STRING HELD IN THE CHILD IS HAND MAKES AN ANGLE OF 60 DEGREES WITH THE HORIZONTAL SURFACE .IF THE FORCE APPLIED BY THE CHILD IS 3N . CALCULATE THE WORK DONE BY THE CHILD IN PULILING THE TOY CAR.
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Answer:
Given,
Force = 3N
Distance = 8m
It makes an angle of 60°
W = F×S×cos60
= 3 × 8 × 0.5
= 12J.
Work done by the child in pulling the toy car is 12J.
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