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A body of mass accelerates uniformly from rest to is time . The instantaneous power delivered to the body as a function of time t is

a)

b)

c)

d)



Question ID - 50984 | SaraNextGen Top Answer

A body of mass accelerates uniformly from rest to is time . The instantaneous power delivered to the body as a function of time t is

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

Let the constant acceleration of body of mass m is a,

From equation of motion

Or                    …(i)

At an instant t, the velocity v of the body

                      …(ii)

Therefore, instantaneous power

  [From Eqs.(i)and (ii)]

=

127 votes


127