- #1
StephenDoty
- 261
- 0
A block of mass m is at rest on an inclined plane that makes an angle of 30º with the
horizontal, as shown in the figure. Which of the following statements about the force of
static friction is true?
A) fs > mg D)fs = mg sin 30º
B) fs > mg cos 30º E) None of these statements is true.
C) fs = mg cos 30º
because the only two forces acting on the block is fs and weight, F=0 since at rest, thus 0=fs - mgsin30 so
fs= mgsin30
So the answer is D right??
horizontal, as shown in the figure. Which of the following statements about the force of
static friction is true?
A) fs > mg D)fs = mg sin 30º
B) fs > mg cos 30º E) None of these statements is true.
C) fs = mg cos 30º
because the only two forces acting on the block is fs and weight, F=0 since at rest, thus 0=fs - mgsin30 so
fs= mgsin30
So the answer is D right??