Multiple Choice
A system of blocks and a frictionless pulley is shown in the figure.Block A has a mass of 2.0 kg and is on a rough horizontal surface for which μs = 0.40 between the surface and block A.The rope pulls horizontally on block A.Block C has a mass of 1.0 kg.An external force P = 23.0 N,applied vertically to block A,maintains the system at rest as shown in the figure.What is the friction force on block A? 
A) 6.3 N
B) 6.9 N
C) 7.5 N
D) 5.7 N
E) 5.1 N
Correct Answer:
Verified
Correct Answer:
Verified
Q26: A 20-ton truck collides with a 1500-lb
Q26: Three boxes in contact rest side-by-side on
Q29: Two blocks are connected by a string
Q30: A system comprised blocks,a light frictionless pulley,and
Q32: A system comprising blocks,a light frictionless pulley,a
Q33: Consider what happens when you jump up
Q35: Three objects are connected as shown in
Q37: A 20.0-N box rests on a 50.0-N
Q38: Two objects are connected by a very
Q39: Two weights are connected by a massless