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qUESTIONS

MCQs-PYQs-12th-jee

A particle is moving on a circular path of radius r with uniform speed v. What is the displacement of the particle after it has described an angle of ?

MCQs-PYQs-12th-jee

A particle is given an initial speed u inside a smooth spherical shell of radius R =1 m that it is just able to complete the circle. Acceleration of the particle when its velocity is vertical is –

MCQs-PYQs-12th-jee

A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/π revolutions per second around the vertical axis through the fixed end as shown in the figure, then tension in the string is –

MCQs-PYQs-12th-jee

A jeep runs around the curve of radius 0.3 km at a constant speed of 60 ms-1. The resultant change in velocity, instantaneous acceleration and average acceleration over 600 arc are

MCQs-PYQs-12th-jee

A particle moves in a circle of radius 4 cm clockwise at constant speed of 2 cm s-1. If and are unit acceleration vectors along x and y axes, respectively, the acceleration of the particle at the instant half way between PQ is given by

MCQs-PYQs-12th-jee

A car is moving on a circular track of radius R. The road is banked at θ. μ is the coefficient of friction. Find the maximum speed the car can have.

MCQs-PYQs-12th-jee

A stone of mass m is tied to a string and is moved in a vertical circle of radius r making n revolutions per minute. The total tension in the string when the stone is at its lowest point is

Rotational Dynamics

A particle of mass is moving in a circular path of constant radius such that its centripetal acceleration is varying with time as , where is a constant. The power delivered to the particle by the forces acting on it is

MCQs-PYQs-12th-jee

The kinetic energy k of a particle moving along a circle of radius depends on the distance covered. It is given as K.E. = as2 where is a constant. The force acting on the particle is

MCQs-PYQs-12th-jee

A particle of mass M moves with constant speed along a circular path of radius r under the action of a force F. Its speed is

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