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Physics - Circular Motion Question with Solution | TestHub

PhysicsCircular MotionMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

An object of mass $10 kg$ is attached to roof by string whirled round a horizontal circle of radius $4 m and$ inclined $30^{o}$ to the vertical. The tension in the string (approximately) is

Options:

Answer:

Solution:

In figure, $sin θ = \frac{AB}{OA}$

$T sin θ = \frac{{mv}^{2}}{r}$

$T cos θ = mg$

$T = \frac{mg}{cos θ}$

$T = \frac{(10) (10)}{(\frac{\sqrt{3}}{2})}$

$T = \frac{200}{\sqrt{3}} \approx 114 N$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Circular MotionSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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