Answer
Common velocity = 688.5 m/s


Block B has mass 4.00 kg and sits at rest on a horizontal, frictionless surface. Block A has mass 2.00 kg and sits at rest on top of block B. The coefficient of static friction between the two blocks is 0.400. A horizontal force P⃗ is then applied to block A. What is the largest value P can have and the blocks move together with equal accelerations?
A block with a mass of 32.5 kg is pushed with a horizontal force of 150 N. The block moves at a constant speed across a level, rough floor a distance of 6.50 m. (a) What is the work done (in J) by the 150 N force? J (b) What is the coefficient of kinetic friction between the block and the floor?
A block of mass M-3.0 kg is pushed up a frictionless 30° incline by an applied force F-25 N as shown in the diagram. a. What is the magnitude of the resulting acceleration of the block? b. If the block starts form rest what is its speed after 5 seconds? 3. F 25 N 300 30°
4. A small block of mass $m_{1}=4 k g$ is placed at rest on a larger block of mass $m_{2}=6 \mathrm{kg}$. The coefficient of friction between the two block is $\mu=0.3 .$ And the horizontal surface is smooth. A constant force $\mathrm{F}$ is applied on the block.
The situation is given in the figure below.
a. Find the value of limiting friction between the two blocks.
b. What is the maximum acceleration by which the upper block can move
c....
Block A in (Figure 1) has mass 1.00 kg, and block
B has mass 3.00 kg. The blocks are forced together,
compressing a spring S between them; then the system is
released from rest on a level, frictionless surface. The spring,
which has negligible mass, is not fastened to either block and
drops to the surface after it has expanded. The spring has force
constant 711 N/m and is initially compressed 0.225 m from its
original length.
a.What is the...
3. A smaller 1-kg block is pushed horizontally against a larger 9-kg block by a force F, as shown below. The coefficient of static friction between the two blocks is 0.20, however the ground that the larger block sits on is frictionless. a. Draw a complete free-body diagram for each block. Hint: remember that the blocks exert forces on each other because they are in contact, and do not forget Newton's 3rd law. (10pts) b. What minimum force F is...
A 3.9 kg block is pushed along a horizontal floor by a force F→ of magnitude 25 N at a downward angle θ = 40°. The coefficient of kinetic friction between the block and the floor is 0.23. Calculate the magnitudes of (a) the frictional force on the block from the floor and (b) the block’s acceleration.
Problem 3 (20 points) In the following figure, a horizontal force F is applied to a large block of mass M with a massless pulley attached to it. While the block M is moving to the right, the other two blocks mi and m2 remain stationary problem relative to M. All surfaces are frictionless for this (a) Draw separate free body diagrams for M(including the massless pulley), mi, and m2 respectively. On the free body diagrams, please only draw and...
A block of mass “m” sits on a (bigger) block of mass “4m” that is on a frictionless table. The coefficients of friction between the two blocks are μs (static) and μk (kinetic). Assume that a horizontal force “F” is applied to the block on top (i.e. the smaller block with mass “m”). The force “F” is variable. The figure below is representative of this scenario. (You may use m = 10 kg, μs = 0.8, μk = 0.6, and...
1. An 8 kg block is pushed against a vertical wall by a horizontal force F. If the coefficient of friction between the block and the wall is 0.30, find the minimum value for F that will prevent the block from slipping.