Laws of Motion 4 Question 8

8. A simple pendulum with a bob of mass m swings with an angular amplitude of 40∘. When its angular displacement is 20∘, the tension in the string is greater than mgcos⁡20∘.

(1984,2M)

Show Answer

Answer:

Correct Answer: 8. T

Solution:

  1. T−mgcos⁡20∘=mv2R or T=mgcos⁡20∘+mv2R
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