Calculating Tension in Circular Motion

[Anon2459]

Homework Statement

A whirlygig is made by hanging a mass, m1 = 324.0 g, through a tube and then spinning another mass, m2 = 111.0 g around so that it forms a circle. When this happens the string makes a small angle with the horizontal as shown in the diagram. If this is done at a specific speed then m1 does not move up or down, for this question assume than m2 is moving at this speed. Also assume that there is no friction between the string and the tube.

What is the magnitude of the tension force acting on mass m2?

Homework Equations

T = mxa + mxg

The Attempt at a Solution

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Since it says that at this speed, m 1 will not move up or down, I'm assuming a is zero

therefore,

T = 0.324 x 9.8

Correct or incorrect?

 

[andrewkirk]

Yes, that sounds right.