A body of mass 2 kg travels according to the law x(t) = pt+qt2 + rt3 where, q=4ms 2, ,p=3ms-1,r = 5ms 3. The force acting on the body at t = 2s is - VgyanHub

Question:

A body of mass 2 kg travels according to the law x(t) = pt+qt2 + rt3 where, q=4ms 2,p=3ms-1,r = 5ms 3. The force acting on the body at t = 2s is

Options :

(a)136 N
(b) 134 N
(c) 158N
(d) 68 N

Answer :

(a)136 N

Answer Steps :

Step 1:

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