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Accelerate NEET 2020: Rotational Motion Class 5 (25.09.2019)

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Question 1

A particle of mass M is revolving along a circle of radius R and another particle of mass m is revolving in a circle of radius r. If time periods of both particles are same, then the ratio of their angular velocities is:

Question 2

A disc is rotating with angular velocity ω. If a child sits on it, what is conserved?

Question 3

For center of mass of a 2D body to be at origin which of the following is true about the position of points,

Question 4

If a disk of radius 10 cm is rolled down a slope from a height of 5 m. If a hollow cylinder of radius 5 cm is rolled from some height. Find the height from which it is rolled such that both the bodies have same linear speed at the bottom. Assume there is no slipping and both bodies have same masses. g=10 m/s².

Question 5

Sides of a rectangular slab are 8 cm and 6 cm respectively. Mass of the slab is 100 gms. Find the moment of inertia of the slab about an axis passing through one of the vertices, perpendicular to the plane, of the rectangle.

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Sep 25NEET & AIIMS