posted by Thien .
A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 20.0 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 83.9 m), the block swings toward the outside of the curve. Then the string makes an angle θ with the vertical. Find θ.
Nevermind Got it
Block has two forces acting on it
Horizontal force is the centripetal force acting towards center of circle
Vertical force is M x G
To get angle, its inverse Tan (MV^2/RMG)