Physics help from experts.
Circular motion is the motion of an object which moves at a fixed distance from a point.
Uniform circular motion is the motion of an object in a circle with constant speed.
A ball hanging from a string is made to
move in a horizontal circle so that the string describes a cone. The string tension
a. is mg.
b. is greater than mg, always.
c. is less than mg, always.
d. may be greater or less than mg depending on the speed of the ball.