A 0.700-kg pendulum bob passes through the lowest part of its path at a speed of 3.55 m/s. (a) What is the magnitude of the tension in the pendulum cable at this point if the pendulum is 60.0 cm long?

N

(b) When the pendulum reaches its highest point, what angle does the cable make with the vertical? (Enter your answer to at least one decimal place.)

°

(c) What is the magnitude of the tension in the pendulum cable when the pendulum reaches its highest point?

N

for a i used m*v^2/r, but im having the hardest time finding parts b and c, all help is appreciated.