Posted by Adam on .
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
v=4.36 m/s but its wrong could someone please help me out. Thank you.