Answer to Question #32414 in Mechanics | Relativity for nat

Question

A brick is on 45° incline (fig 3a). Draw the Free Body Diagram. What is the net force on the brick if it is
stationary? What must the coefficient of static friction (µs) be to have zero net work done on the block? If the
block is 125 kg, what is the work done by gravity, by friction and the net work on the block if it slides down for 5.0
seconds and assuming µk to be 1/8 that of µs? Starting at rest on a flat, frictionless surface, calculate the
acceleration needed to attain the same amount of work as the system above over a 10.5 second period.