Force
A 2 kN block is resting on a rough horizontal surface for which the coefficient of friction is 0.4. Determine the force P (kilonewton) required to cause motion to impend if applied to the block downward at 40° with the horizontal. (round off to two decimal places)
The answer is 1.56.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
Psin40 + 2 = N
∑ F h = 0
Pcos40 = F = 0.4(Psin40 + 2)
1.92P - 0.64P = 2
1.28P = 2
P = 1.56 kN