An antique carousel that's powered by a large electric motor undergoes constant angular acceleration from rest to full rotational speed in 6 seconds. when the ride ends, a brake causes it to accelerate steadily from full rotational speed to rest in 9.2 seconds. compare the torque that starts the carousel to the torque that stops it.

during the acceleration the time taken to reach full speed is 6 s

so angular acceleration will be given as

now from the same maximum speed it will stop in time t = 9.2 s

so deceleration is given as

now we can say initially the torque will be given as

now we have

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.