A body of mass 5 kg is acted upon by a variable force. The force varies with the distance covered by the body. What is the speed of the body when the body has covered 25 m? Assume that the body starts from rest.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(10 m s –1 )
Sol. Work done by force when body has covered 25 m
= Area under curve upto distance 25m
= 10 × 25 = 250 J
Now W = 
K = 
× 5 (v 2 – 0 2 ) = 250
v = 10 m/s.
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