Multiple Choice
A 4.00-kg block rests between the floor and a 3.00-kg block as shown in the figure. The 3.00-kg block is tied to a wall by a horizontal rope. If the coefficient of static friction is 0.800 between each pair of surfaces in contact, what horizontal force F must be applied to the 4.00-kg block to make it move? 
A) 16.2 N
B) 54.9 N
C) 21.1 N
D) 23.5 N
E) 78.4 N
Correct Answer:
Verified
Correct Answer:
Verified
Q1: A rope pulls on the lower block
Q3: Two objects are connected by a very
Q5: A 1520-N crate is to be held
Q6: Two boxes are connected by a weightless
Q7: A system of blocks and a frictionless
Q8: Two weights are connected by a massless
Q9: The figure shows a 2000 kg cable
Q10: Two bodies P and Q on a
Q11: Block A of mass 8.0 kg and
Q13: On a horizontal frictionless floor,a worker of