A small spherical ball is suspended by a string of length
PHYSICS · Multi correct · AP · Physics 1: Algebra-based · Force and Translational Dynamics · Force and Translational Dynamics
Problem
A small spherical ball is suspended by a string of length l. The arrangement is placed in a vehicle moving with velocity v. When the vehicle suddenly stops, the ball starts moving in a vertical circle. If the tension in the string at the highest point is twice the weight of the ball, then, assuming that the ball completes the vertical circle,
(1) v=5gl
(2) v=7gl
(3) Velocity of the ball at the highest point is gl.
(4) Velocity of the ball at the highest point is 3gl.