Question

A 2.4 kg object attached to a horizontal string moves with constant speed in a circle of radius R on a frictionless horizontal surface. The kinetic energy of the object is 95 J and the tension in the string is 315 N. Find R.
string tension = m V^2/R
= 2*(K.E.)/R = 315 N

Solve for R

I have no idea

Related Questions

A 4.00-kg object is attached to a vertical rod by two strings. The object rotates in a horizontal ci... A 4 kg object is attached to a vertical rod by two strings, as in the figure. The object rotates in... A 20.0 gram mass is attached to a 120 com long string. It moves in a horizontal circle with a consta... Problem 2- A 4 kg object is attached to a vertical rod by two strings, as in the Figure. The object...