How fast in rpmrpm (revolutions per minute) is the arm turning to produce the maximum sustained acceleration?.

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:

What does the law of conservation of mass state?

You can melt ice by applying pressure because the solid/liquid line has a slope.