Home
Class 12
PHYSICS
A solid sphere, a ring and a disc all ha...

A solid sphere, a ring and a disc all having same mass and radius are placed at the top of an incline and released. The friction coefficient between the objects and the incline are same but not sufficient to allow pure rolling. Least time will be taken in reaching the bottom by

Text Solution

Verified by Experts

Due to slipping, kinetic friction`mu_k mgcostheta` will act on all.`mgsintheta-mg costheta=mA_(CM)``rArrA_(CM)=g(sintheta-mcostheta)`is again same for all bodies.Hence all will take same time `t=sqrt((2l)/g(sintheta-mucostheta)``rArr`D is correct.
Promotional Banner

Similar Questions

Explore conceptually related problems

A solid sphere, a hollow sphere and a disc, all having same mass and radius, are placed at the top of an incline and released. The friction coefficients between the objects and the incline are same and not sufficient to allow pure rolling. The smallest kinetic energy at the bottom of the incline will be achieved by

A ring, a solid cylinder and a solid sphere, all having same mass and radius, are placed at the top of an incline and released. The friction coefficents between the objects and the incline are same and not sufficient to allow pure rolling. ( a ) Which body will reach the bottom first? ( b ) Which body will have the minimum kinetic energy at the bottom?

A solid sphere a hollow sphere and a disc all having same mass and radius, are placed at the top of a moth incline and released. Least time will be taken in reaching the bottom by

A nollow sphere and a solid sphere having same mass and same radii are rolled down a rough incline plane.

P is a solid sphere and Q is a hollow sphere both having the same mass and radius .If they roll down from the top of an inclined plane , on reaching the bottom .

A solid sphere, a hollow sphere and a disc, all having smooth incline and released. Least time will be taken in reaching the bottom by

A solid sphere and a solid cylinder having the same mass and radius, rolls down the same incline. The ratio of their acceleration will be