Which type of forces are responsible in explosion of chemical bomb internal or external forces ?
A cylinder of mass $M$ and radius $r$ is mounted on a frictionless axle over a well. A rope of negligible mass is wrapped around the cylinder and a bucket of mass $m$ is suspended from the rope. The linear acceleration of the bucket will be
Write the Newton's second law for rotational motion about a fixed axis.
What is rigid body ? Explain rigid body.
Which forces needed for the rotational motion about a fixed axis ?