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,
μ
s
​

, 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
μ
s
​

found in b) above? Explain. For this problem, use:
P=W