Help IN UNIFORM CIRCULAR MOTION

[Equilibrium]

A 1kg mass is attached to a cord 1 meter long and made to move as a conical pendulum. If the cord makes 30 degrees with the vertical, find a.) the tension in the cord; b.) the period of the motion and c.) the speed of the mass...

 

[andrewchang]

did you try the question?

try drawing a free body diagram. it may help.

 

[Equilibrium]

 

[andrewchang]

the diagram's kind of small. well, think about it this way: there are two forces acting on the ball- the tension and the weight. Now, is the ball moving up or down? since it isn't, you can break the tension into components and set the vertical one equal to the gravity.