A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 85 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it has a speed of 2.6 m/s.


(a) Find the magnitude of the centripetal force acting on the monkey.

for A, i basically used  tangent of theta equal v^2/rg to answer the answer for a.

but the F(n) is equal sin of theta is equal to mass(v^2)/r, what is the angle of sin, i do not understand....... for B, which is

(b) Find the magnitude of the tension in the monkey's arm.

Last edited by cocotown22 (2008-04-02 06:09:33)