A person sitting in a chair (combined mass 80kg) is attached to a 6m long cable. The person moves in a horizontal circle. The cables angle is 62 degrees below the horizontal. What is the persons speed? Note: the radius of the circle is not 6m.

I really just need and equation all the ones I try just don't work.

1 answer

The equation you need is:
Speed = √(g x radius x sin(angle))
where g is the acceleration due to gravity (9.8 m/s2).

Therefore, the speed of the person in the chair is:
Speed = √(9.8 x radius x sin(62))