An air puck of mass .025kg is tied to a string and allowed to revolve in a circle of radius 1.0 m on a frictionless horizontal surface. The other end of the string passes through a hole in the center of the surface, and a mass of 1.0 kg is tied to it. The suspended mass remains in equilibrium while the puck revolves on the surface.
a. what is the magnitude of the force that maintains circular motion acting on the puck?
b. What is the linear speed of the puck?
for a. I have Fc=mVt^2/r
The Attempt at a Solution
well, I kinda got stuck on the part where there are two masses. I didnt know whether to add them together or to just use one of them. And I didnt know where else to start. Any guidance in the right direction would be most appreciated. Thanks.