Question

A ball of mass 24 g is attached to a cord of length 0.463 m and rotates in a vertical circle. What is the minimum speed the ball must have at the top of the circle so the cord does not become slack? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/s.

Answer 1

Answer:2.13 m/s

Step-by-step explanation:

Given

mass of ball
`m=24 gm`

Length of cord
`L=0.463 m`

acceleration due to gravity
`g=9.8 m/s^2`

minimum velocity after which cord will slack

`(mv^2)/(r)=mg`

`v=√(rg)`

`v=√(0.463* 9.8)`

`v=2.13 m/s`