Home
Class 12
PHYSICS
A ring and a disc roll on the horizontal...

A ring and a disc roll on the horizontal surface without slipping with same linear velocity. If both have same mass and total kinetic energy of the ring is 4 J then total kinetic energy of the disc is

A

3 J

B

4 J

C

5 J

D

6 J

Text Solution

Verified by Experts

The correct Answer is:
A
Total K.E. of the Rolling disc `=(3)/(4)mv^(2)`
and the total K.E. of the Rolling ring `(K_(2))=mv^(2)`
and the total K.E. of the Rolling ring `(K_(2)=mv^(2)`
`therefore K_(1)=(3)/(4)mv^(2)=(3)/(4)" (Total K.E. of the ring)"`
`=(3)/(4)xxK_(2)=(3)/(4)xx4=3J`
Promotional Banner

Topper's Solved these Questions

  • ROTATIONAL MOTION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 3|8 Videos

  • OSCILLATIONS

    MARVEL PUBLICATION|Exercise MCQ|368 Videos

  • SEMICONDUCTORS

    MARVEL PUBLICATION|Exercise MCQs|261 Videos

Similar Questions

Explore conceptually related problems

A ring and a disc roll on the horizontal surface without slipping, with same linear velocity. If bolh have same mass and total kinetic energy of the ring is 4 J, then total kinetic energy of the disc is

A loop and a disc have same mass and roll without slipping with the same linear velocity v . If the total kinetic energy of the loop is 8 J , the kinetic energy of the disc must be.

A disc of mass 2 kg is rolling on a horizontal surface without slipping with a velocity of 0.1 m/s. What is its rotational kinetic energy?

A ring and a disc having the same mass, roll without slipping with the same linear velocity. If the kinetic energy of the ring is 8 j , Find the kinetic energy of disc (in J)

A sphere is rolling on a horizontal surface without slipping. The ratio of the rotational K.E. to the total kinetic energy of the sphere is

A disc of mass 4.8 kg and radius 1 m is rolling on a horizontal surface without sliding with angular velocity of 600 rotations/min. What is the total kinetic energy of the disc ?

A solid cylinder and a sphere, having the same mass, rolls without slipping with the same linear velocity. If the kinetic energy of the cylinder is 75 J , that of the sphere must be

What fraction of translational kinetic energy of rolling circular disc to total kinetic energy ?

A solid sphere rolls on horizontal surface without slipping. What is the ratio of its rotational to translation kinetic energy.

A ring, disc, hollow sphere and solid sphere roll on a horizontal surface with the same linear speed. If they have same mass and radius and move without slipping, rotational kinetic energy is more for