KinematicsHard

Question

Block B has a down ward velocity in m/s and given by vB = , where t in s. Acceleration of A at t = 2 second is

Options

A.2 m/s2
B.4 m/s2
C.6 m/s2
D.None of these

Solution


(4T ) aA = (2T) (aB)
⇒ aA =
but aB =
= t + ⇒ aA =
At t = 2s,
aA = 1 + 1 = 2 ms-2

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