- #1
Kotune
- 21
- 0
Homework Statement
A 40kg gymnast swings in a vertical circle on a bar. Her centre of mass is 1.20m from the bar. At the highest point her centre of mass is moving at 1.0ms^-1)
ai) How fast is she moving when her centre of mass is level with the bar?
aii) How much force does she have to exert on the bar in order to hang on at the lowest point in the swing?
Homework Equations
Answer to ai) is 5ms^-1 and aii) is 1.6kN
The Attempt at a Solution
I got no idea where to start. ><