Question

A 15.7 kg block is at rest on a ramp, whose angle is 12.1 degrees from the horizontal.

How much Normal Force is acting on the block?
Henry
m*g = 15.7 * 9.8 = 153.9 N. = Wt. of
block.

Fn = 153.9*cos12.1 = 150.4 N.