The system shown above is released from rest. If the friction is negligible, the acceleration of the 4 kg block sliding on the table shown above is: (Take g =10 m/s)
A. O m/s?
B. 1.7 m/s2
C. 3.3 m/s2
D. 5 m/s2
E. 10 m/s2

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: