The ball B has a mass of 4 kg and is attached to the end of a rod whose mass can be neglected. The ball B is initially at rest at t=0s. If the shaft is subjected to a torque, which varies with time as shown in the graph, determine the time required (in seconds) for the ball to stop if Mmax = 7,8 Nm.
Note: Please answer with 2 digits after the comma!
M
1.5 m
B
M(Nm)
Mmax
30
75
t=?
t (s)