October 26, 2016

Homework Help: physics

Posted by Adam on Tuesday, May 22, 2012 at 6:32pm.

A 0.700-kg ball is on the end of a rope that is 2.20 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0 with respect to the vertical as shown. What is the tangential speed of the ball?

I got this:counterbalanced by the horizontal component of rope tension:

So here's the result
using g=9.81
v=4.36 m/s but its wrong could someone please help me out. Thank you.

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