in the figure The coefficients of static friction are shown

in the figure. The coefficients of static friction are shown in the fgure. The mass of block A is 60kg. Frictionless pulley 03 HA 02 1. If the verge to slide down the inclined plane, what is the friction force between block A and block B? A) 25.5 N 60.0 lb 57.2 lb 3.9 lb IE 94.3 lb 40.0 lb 2. If block Ais on the verge to slide down the inclined plane, what is the friction force between block A and inclined plane? (A) 153 N 139 N (B 119N ODD 330 N GE 21.1 N 57.6 N 3. What is the smallest value of applied force P that will keep block A from sliding down the inclined plane? 194 N BO 2N 27.9 N IDI 755N 540 N 39N 4. What is the smallest value of applied force P that will make blockAslide up the inclined plane? KASI 720 N 547 N 283 N IDEOIN 415N 69N

Solution

1. The friction force between block A & block B when block A is on the verge to slide down is 13.9 lb.

2. The friction force between block A & inclined plane is 119 N.

3, Smallest value of applied force P that will keep block A from sliding down is 27.9 N

4. Smallest value of the applied force P that will make block A slide up the inclined plane is 30.1 N