Question

an object swings at the ene if a string in uniform circular motion. which of the following changes would not cause an increased centrioetal force

invreasing the angular speed if a rotating body will not cause an increase in

Answer 1

The centripetal acceleration is given by

Where m is the mass of object, v is the linear speed of object and r is the radius of the circle or length of string.

this means for F to increase we need larger mass, greater linear speed and shorter string.

A large string would results decrease in centripetal acceleration.

Increasing the angular speed of a rotating body will not cause an increase in Moment of inertia because it depends on mass of object and distance from rotation axis.  It does not depend on angular speed.