Question

((wrong answer will be reported
and ya 'Please don't paste from Google)) ​

Answer 1

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Given,

A simple pendulum.

• Tension = T. Angle with vertical = θ.

• Speed of pendulum = vatθ

• Length of string = L

T = mgcosθ+mv²/L

mv²/2 = KE = mgLcosθ ( loss in PE).

By Solving these,

T = 3 mg cosθ

When the string snaps, T= 2 mg.

so cosθ = 2/3

θ = cos-¹ 2/3

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Answer 2

A simple pendulum.

Tension = T. Angle with vertical = θ.

Speed of pendulum = vatθ

Length of string = L

T = mgcosθ+mv²/L

mv²/2 = KE = mgLcosθ ( loss in PE).

By Solving these,

T = 3 mg cosθ

When the string snaps, T= 2 mg.

so cosθ = 2/3

θ = cos-¹ 2/3