Practice free Rotational Motion (Physics) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
A solid cylinder rolls down an inclined plane that has friction sufficient to prevent sliding. The ratio of rotational energy to total kinetic energy is
A swimmer while jumping into water from a height easily forms a loop in the air, if
When a swimmer pulls in their arms and legs while jumping into water, their moment of inertia decreases, causing an increase in their angular speed (due to conservation of angular momentum). This increased angular speed allows them to perform a loop in the air more easily.
Assertion : A ladder is more apt to slip when you are high up on it than when you just begin to climb
Reason : At the high point on a ladder, the torque is large and on climbing up the torque is small
The assertion and reason are true, and the reason correctly explains the assertion. When climbing higher on a ladder, the perpendicular distance from the center of mass to the base increases, resulting in a larger torque acting on the ladder, making it more prone to slipping.
An inclined plane makes an angle of with the horizontal. A solid sphere rolling down this inclined plane from rest without slipping has a linear acceleration equal to
Which of the following statements is correct?
In an inelastic collision, the only momentum is conserved. K.E. is not conserved
If a gymnast, sitting on a rotating stool, with his arms outstretched, suddenly lowers his hands
When mass is placed nearer the axis of rotation, M.I. decreases, angular velocity increases.
Moment of inertia of a uniform circular disc about a diameter is I. Its moment of inertia about an axis perpendicular to its plane and passing through a point on its rim will be
M.I. of a disc about any diameter =
M.I. of the disc about an axis passing through a point on its rim and perpendicular to its plane
A disk and a sphere of the same radius but different masses roll off on two inclined planes Of the same altitude and length Which one of the two objects gets to the bottom of the plane first
(b)
a(sphere)>a(disc)
sphere reaches first
A ball hits the floor and rebounds after an inelastic collision. In this case
Net force on ball and earth system is zero.
The rotational KE of a body is E and its moment of inertia is I. The angular momentum is
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.