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Motion in Two Dimension — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsMotion in Two Dimension1 Mark
MCQ
A simple pendulum oscillates in a vertical plane. When it passes through the mean position, the tension in the string is 3 times the weight of the pendulum bob. What is the maximum displacement of the pendulum of the string with respect to the vertical
  • A
    30 -
  • B
    45
  • ✓
    60
  • D
    90
✓

Answer

Correct option: C.
60
(c) Tension, $T=\frac{m v^2}{r}+m g \cos \theta$For, $\theta=30^{\circ}, T_1=\frac{m v^2}{r}+m g \cos 30^{\circ}$$\theta=60^{\circ}, T_2=\frac{m v^2}{r}+m g \cos 60^{\circ} \therefore T_1>T_2$

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