Determine the smallest horizontal force $P$ needed to cause motion.

The dresser has a weight of $60$ lb and is pushed along the floor as shown in $($Figure $1).$ Assume $h=4ft.$ The coefficient of static friction at A and $B$ is ${}_s=0\mathrm{.}34$ and the coefficient of kinetic friction is ${}_k=0\mathrm{.}2.$

Express your answer in pounds to three significant figures.

$P=20\mathrm{.}4lb$

$$ Previous Answers

Correct

Part B

If force $P$ is increased slightly, determine the acceleration of the dresser.

Express your answer in feet per squared second to three significant figures. Assume the positive direction is to the right.

Submit

Previous Answers

Correct

Part C

Also, what are the normal reaction at A and $B$ when it begins to move?

Express your answers in pounds using three significant figures separated by a comma.

$N_A,N_B$

lb