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Self Studies

Motion in a Pla...

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  • Question 1
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    A particle is moving on a circular path with constant speed, then its acceleration will be

  • Question 2
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    A mass of 100 gm is tied to one end of a string 2 m long. The body is resolving in a horizontal circle making a maximum of 200 revolutions per min. The other end of the string is fixed at the centre of the circle of revolution. The maximum tension that the string can bear is (approximately)

  • Question 3
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    A car of mass 800 kg moves on a circular track of radius 40 m. If the coefficient of friction is 0.5, then maximum velocity with which the car can move is

  • Question 4
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    Two bodies, each of mass M are kept fixed with a separation 2L. A particle of mass m is projected from the midpoint of the line joining their centres, perpendicular to the line. The gravitational constant is G. The correct statements is

  • Question 5
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    A particle of mass m is attached to one end of a mass-less spring of force constant k, lying on a friction less horizontal plane. the other end of the spring is fixed. The particle parts moving horizontally from its equilibrium position at time t = 0 with an initial velocity u 0. when the speed of the particle is 0.5u 0. It collides elasticity with a rigid wall. After this collison

  • Question 6
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    An electric fan has blades of length 30 cm as measured from the axis of rotation. If the fan is rotating at 1200 rpm. The acceleration of a point on the trip of the blade is about

  • Question 7
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    The acceleration of a train travelling with speed of 400 m/s as it goes round a curve of radius 160 m is

  • Question 8
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    A particle of mass m is executing uniform circular motion on a path of radius r. If p is the magnitude of its linear momentum. The radial force acting on the particle is

  • Question 9
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    A particle moves in a circular orbit under the action of a central attractive force inversely proportional to the distance \'r\'. The speed of the particle is

  • Question 10
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    Two masses M and m are attached to a vertical axis by weightless threads of combines length l. They are set in rotational motion in a horizontal plane about this axis with constant angular velocity ω. If the tension in the threads are the same during motion, the distance of M from the axis is

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