Determine the terminal settling velocity in water of a spherical sand particle of 0.5 mm diameter. the density of the sand is 2.65 x 10^3kg/m3, and the viscosity of water at 25 °c is 1.0 x lo^-3kg-m^-1.s^-1. hint: stokes' law is not appropriate.

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: