Question

KA Q21) A pendulum bob of mass 4 kg is attached to a string (1m ) which can bear a maximum tension of 46 N. When it is allowed to move, what is the maximum height to which it can go up? ​

Answer 1

Explanation:

We have,

Tsinθ=mrω

2

But,

sinθ=

L

r

∴T=mLω

2

∴324=0.5×0.5×ω

2

∴ω=36 rad/s

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