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Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A simple pendulum is oscillating with an angular amplitude of $90 °$ . If the direction of resultant acceleration of the bob is horizontal at a point then angle made by the string with vertical is

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Answer:

Solution:

$\tan θ = \frac{\frac{v^{2}}{r}}{g \sin θ}$

But $v^{2} = 2 g h$ ;

$h = r \cos θ$

$\cos θ = \frac{1}{\sqrt{3}} \Rightarrow θ = \cos^{- 1} (\frac{1}{\sqrt{3}})$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Circular MotionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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