A ball is tied to a string that passes through a glass tube and is attached to a hanging mass - Physics - Laws Of Motion

Question

A ball is tied to a string that passes through a glass tube and is
attached to a hanging mass The tube is held vertically as the ball
is swung in a horizontal circle at a radius r and at a speed of v
if the radius become 2r the speed of the ball become?

Anshu Agrawal · Accepted Answer

Dear student,
According to the law of conservation of angular momentum, if the
radius is doubled, speed will be halved
So speed will become = v/2
Regards

A ball is tied to a string that passes through a glass tube and is attached to a hanging mass.The tube is held vertically as the ball is swung in a horizontal circle at a radius r and at a speed of v.if the radius become 2r the speed of the ball become?