Question

if the pendulum attached to a roof of elevator which is accelerating upward with 'a' then what will be it's effective acceleration due to gravity and what will be it's effective time period Plzz explain in a correct detailed explanation​

Answer 1

Ello user

The effective accn. will be (g+a).

For time period , we have

Let the tension in the string be T,

So, ATQ, we have..

T = mg + ma

ma' = m(g+a)

So, Time period = T = 2*pi√(l/g+a).

HOPE this helps.

Answer 2

Explanation:

If accelerating upward, the pendulum and everything in it will feel as if the value of g (gravitational acceleration) has increased, because of inertia. So it will "feel" heavier and the period will decrease (faster swinging). ... So if, for example, , then the period will decrease by 29%.