Question

Two blocks A and B with masses of 50 and 100 kg, respectively, are connected by a rope, the pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the inclined plane is 0.25. If block A moves from C to D a distance of 10m. Assume part of rest. Angle is 35.

Determine: a) The change in kinetic energy of block A, b) The change in potential energy in block B, c) Calculate the work of the friction force, d) Calculate the work of tension, e) Calculate the work of each of the weights.

Answer #1

Two blocks with masses 4.0kg and 8.0kg are connected by a string
and slide down a 30 degree inclined plane. The coefficient of
kinetic friction between the 4.0kg block and the plane is 0.25:
that between 8.0kg block and the plane is 0.35.
a)
Calculate the acceleration of each block
b)
Calculate the tension in the string.

Two blocks with masses m1 = 1.10 kg and m2 = 3.50 kg are
connected by a massless string. They are released from rest. The
coefficent of kinetic friction between the upper block and the
surface is 0.440. Assume that the pulley has a negligible mass and
is frictionless, and calculate the speed of the blocks after they
have moved a distance 68.0 cm.

Block A (mass 40 kg) and block B (mass 80 kg) are connected by a
string of negligible mass as shown in the figure. The pulley is
frictionless and has a negligible mass. If the coefficient of
kinetic friction between block A and the incline is μk =
0.26 and the blocks are released from rest, determine the change in
the kinetic energy of block A as it moves from C to D, a distance
of 23 m up the...

Block A (mass 40 kg) and block B (mass 80 kg) are connected by a
string of negligible mass as shown in the figure. The pulley is
frictionless and has a negligible mass. If the coefficient of
kinetic friction between block A and the incline is
μk = 0.24 and the blocks are released from
rest, determine the change in the kinetic energy of block A as it
moves from C to D, a distance of 19 m up the...

Two blocks of equal mass mA=mB= 4.75 kgkg
are connected by a rope over a frictionless pulley, as shown in the
figure. Block B begins to fall and pulls Block A up the incline.
Block A is on a rough incline with the coefficient of kinetic
friction of μk =0.10 between the block and the incline.
The angle of the incline is θ=30°.
a) Calculate the normal force on block A.
b) Calculate the frictional force on block A from...

In the figure, two blocks are shown with an inclined plane. The
two blocks are connected by a massless string strung over a
massless pulley. The mass of Block #1 is 3.57 kg and that
of Block #2 is 11.0 kg. The angle θ of the
incline is 43.0 degrees. The plane is NOT smooth and has a
coefficient of static friction of 0.570 and a coefficient of
kinetic friction of 0.240.
Taking the positive direction to be up the...

Two blocks (m1=5.5kg, m2=7.2kg
) are connected by a string that passes through a massless pulley
as shown in the Figure. The first block with mass
m1 slides up the inclined
plane when the system is released. The inclined plane makes an
angle θ = 310 with the
horizontal and the kinetic friction coefficient between the
inclined plane and m1 is
=0.35. Take g=10m/s2 Find
the speed of the block with mass m2 after it travels
h=5.6m.

Two masses are connected by a massless string and a frictionless
pulley. The masses of the blocks are; m1=500 g and m2= 150g. The
coefficiant of friction between m1 and the surface is 0.25. (a)
What is the acceleration of the masses? (b) What is the tension in
the string?

Two blocks are positioned on surfaces, each inclined at the same
angle of 45.4 degrees with respect to the horizontal. The blocks
are connected by a rope which rests on a frictionless pulley at the
top of the inclines as shown, so the blocks can slide together. The
mass of the black block is 4.22 kg, and the coefficient of kinetic
friction for both blocks and inclines is 0.370. Assume static
friction has been overcome and that everything can slide....

1.
Two masses are connected by a string which goes over an ideal
pulley. Block A gas a mass of 3kg and the rough plane is inclined
30 degrees to the horizontal. The coefficients of friction between
block A and the plane are Us=0.4 and Uk=0.2. The system initially
at rest. If mass B increases gradually by addjng small masses on
the top, what is the minimum value of mass B needed for mass A to
start moving up?
2....

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