Please but 2 lines under the final answers And disconnected letters Please but 2
ID: 1638559 • Letter: P
Question
Please but 2 lines under the final answers And disconnected letters Please but 2 lines under the final answers And disconnected letters A wood block weighs 50 N. (i) The block rests on a horizontal table top: (a) What is the normal force exerted by the table? F (b) What is the force of (static) friction? but the block remains at rest: (a) What is the normal force exerted by the table? FN (b) What is the force of (static) friction? fs- G) The table top is tilted to a 30° angle, and the block still doesn't move: (a) What is the normal force exerted by the table? F (b) What is the force of (static) friction fe" 10° 30° (over)
Explanation / Answer
net force along y direction is zero
Fy = 0
N- mg cos theta = 0
N = mg cos theta
= 50 N cos 30
=43.3 N
Apply Newton second law to the block
mg sin theta - fs = ma
since block is not move a= 0
mg sin theta -fs = m(0)
mg sin theta = fs
fs = 50 N sin 30
= 25 N