020 10.0 points Sand from a stationary hopper falls on a mov- ing conveyor belt at...
A hucket drops sand vertically onto a moving conveyor-belt at the rate of 5.70 kgis. The rubber conveyor-belt is supported by wheels (frictionless) and moves at a constant speed of tha motor that drivas the belt. - D.710 m/s under the action of a constant horizontal axternal force supplied by Figure P9.87 (a) Find the sands rate of change of momentum in the horizontal direction. (b) Find the force ot friction exerted by the belt on the sand (c) Find...