please help with this physics questions...studying real hard for exam....?

[delkkis]

A bead slides without friction around a loop-the-loop. The bead is released from a height h = 3.25R.

(a) What is the bead's speed (V) at point A? Answer in terms of R and g, the acceleration of gravity.


(b) How large is the normal force on the bead if its mass is 5.80 g?
N (downward


2) A block of mass 0.245 kg is placed on top of a light vertical spring of force constant 5160 N/m and pushed downward so that the spring is compressed 0.100 m. After the block is released from rest, it travels upward and then leaves the spring. To what maximum height above the point of release does it rise?.