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The particle P of mass m is attached to two light, rigid rods AP and BP of length l each. A and B are hinges on a fixed, vertical axis. The system APB can rotate freely about this axis. The angle ABP = the angle BAP = θ. The tensions in AP and BP are T1 and T2 respectively.The system is now rotated by 90° so that AB becomes horizontal and P is located vertically below AB. What is the minimum horizontal velocity that must be imparted to P, normal to the plane of the figure, such that it moves in a complete circular path in a vertical plane with AB as the axis?(a) 2√(gl sin θ)(b) 2√(gl cos θ)(c) (5/2)√(gl sin θ)(d) None of these |
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Answer» Correct Answer is: (a) 2√(gl sin θ) |
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