Given: A homogeneous quarter-circle block (with a radius of R and a weight of W) is supported by a rough, horizontal floor, as shown.. A force P is applied to the block at corner B. Find: For this problem: a) Determine the x-location of the normal force acting on the block by the floor. Express your answer in terms of R. b) What is the minimum coefficient of static friction between the block and ground, Ms, that is required to prevent motion of the block? c) Is the block in a state of impending slipping or tipping for the value of us found in b) above? Explain. For this problem, use: P = W. 12 5 B R US X