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A long horizontal rod has a bead which can slide along its length, and initially placed at a distance L from one end A of the rod. The rod is set in angular motion about A with constant angular acceleration α. If the coefficient of friction between the rod and the bead is μ, and gravity is neglected, then the time after which the bead starts slipping is

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Important Questions on Circular Motion

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Circular Motion>Competitive Thinking>Q 54
On the centre of a frictionless table, a small hole is made, through which a weightless string of length 2l is inserted. On the two ends of the string, two balls of the same mass m are attached. The arrangement is made in such a way that half of the string is on the table top and half is hanging below. The ball on the table top is made to move in a circular path with a constant speed v. What is the centripetal acceleration of the moving ball?
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Circular Motion>Competitive Thinking>Q 55
Banking of roads is independent of
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Circular Motion>Competitive Thinking>Q 56
A car sometimes overturns while taking a turn. When it overturns, it is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Circular Motion>Competitive Thinking>Q 57
A cyclist taking turn bends inwards while a car passenger taking the same turn is thrown outwards. The reason is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Circular Motion>Competitive Thinking>Q 58
A train is moving towards the north. At one place, it turns towards north-east. Here, we observe that
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Circular Motion>Competitive Thinking>Q 59
A car is travelling on a circular banked road. The centripetal acceleration of a car is provided by
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Circular Motion>Competitive Thinking>Q 60
A car is negotiating a curved road of radius R. The road is banked at an angle θ. The coefficient of friction between the tyres of the car and the road is μs. The maximum safe velocity on this road is
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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 1 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 9 - Circular Motion>Competitive Thinking>Q 61
A body is moving in a circular orbit with static friction 0.2. If radius through which the body revolves is 100 m and g=9.8 m s-2, then the maximum speed with which body revolved is