Homework Help: Physics

Posted by Alex on Monday, October 10, 2011 at 7:39pm.

An object m of mass m=1kg is attached to a string that passes through a hole in the center of a table. The object m moves in a circle of radius r=1.3m. An object M of mass M=2.1kg is tied to the other end of the string, and hangs vertically beneath the table. Assuming the tabletop is frictionless, what speed must the object m have if the mass M is to remain at rest?

Physics - drwls, Monday, October 10, 2011 at 7:42pm
m g = M V^2/r

Solve for V. You know M, m, g and r.

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