Question

The string of simple pendulum is horizontal at height and released, the tension in string at lowest

point is

(A) T = mg (B) T = 3mg (C) T = 2mg (D) T = 6 mg​

Answer 1

Answer:

Explanation:

If string length is L,

Conserving energy, velocity at lowest point is (2gL)  ^1/2

Centripetal  force mv  ^2  /l =2mg.

T−mg=mv  ^2 /L

T=3mg

Option b is the answer