How to find tension and acceleration in a 3 blcok pulley system with friction

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

Frequency of electromagnetic waves that a radio station is assigned is called