Asking again because I could not include the graph before
PLEASE include an explanation of some sort:

1: A 75.0 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 20.0 m) and spun at a constant angular velocity of 15.0 rpm (revolutions per minute). He is then slowed and brought to a stop in 2.0 minutes.
(1a) Find the magnitude and direction of the centripetal acceleration and force when he is spinning at constant angular velocity.

(2a) How many g’s is the astronaut experiencing when moving at constant angular velocity?

(3a) Find the torque that is needed to bring the centrifuge to a stop knowing the centrifuge has a mass of 5500.0 kg (ignore all other forces) and the force is applied at the edge of the centrifuge (20.0 m radius). Hint: torque is based on the change of linear velocity.

2: An astronaut lands on an alien planet. He places a pendulum (L = 0.200 m) on the surface and sets it in simple harmonic motion, as shown in this graph.(graph is in attached image)

(2a) What is the period and frequency of the pendulum’s motion?

(2b) How many seconds out of phase with the displacements shown would graphs of the velocity and acceleration be?

(2c) What is the acceleration due to gravity on the surface of the planet in m/s2? Determine the number of g-forces.