Question 3: A block of mass 2.00 kg rests on a ramp tilted at 25.0. Coefficients of friction for the block/ramp: Hs = 0.300, uk = 0.100. A string passing over a high- quality pulley connects the block with a bucket as shown below. The bucket contains sand, but a hole is punched in the bottom, and it starts to run out. When there is a certain amount of sand left in the bucket the block starts to move. (a) What mass of sand is left in the bucket when it starts to move? (b) Find the acceleration rate of the block/bucket system shortly after motion begins. (K:4, 1:4, A:4, C:4)Question 4: A crate of weight Fg is pushed by a force P on a horizontal floor as shown in the figure. The coefficient of static friction is us, and P is directed at angle 0 below the horizontal. Show that the minimum value of P that will move the crate is given by p= Usg seco 1- u, tan 0 (K:2, 1:2, A:2, C:2) TA