Question

Two masses m1= 6 kg and m2=2 kg are connected by a massless strings over a massless pulley as shown in the figure. the displacement of m1 after 5 seconds is:

Three concrete blocks were placed on a weightless plank. The weights are: w1 = 1 N, w2 = 2 N, and w3 = 4 N Where is the centre of gravity?

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Thank's

Abdul-Rahim Taysir

Answer #1

Two blocks with masses M1 and M2 are connected by a massless
string that passes over a massless pulley as shown. M1 has a mass
of 2.25 kg and is on an incline of 49.5° with coefficient of
kinetic friction ?1 = 0.205. M2 has a mass of 5.45 kg and is on an
incline of 31.5° with coefficient of kinetic friction ?2 = 0.105.
Find the magnitude of the acceleration of M2 down the incline.

Two blocks with masses M1 and M2 are connected by a massless
string that passes over a massless pulley as shown.
M1 has a mass of 2.25 kg and is on an incline of θ1=46.5∘ with
coefficient of kinetic friction μ1=0.205.
M2 has a mass of 6.05 kg and is on an incline of θ2=33.5∘ with
coefficient of kinetic friction μ2=0.105.
The two‑block system is in motion with the block of mass M2
sliding down the ramp.
Find the magnitude...

A box with mass of 5 kg is pushed with a force of 15 N on a
rough horizontal floor. Find the friction force (assume that the
static friction coefficient µs=0.4 ).
Please Solve As soon as
Solve quickly I get you thumbs up directly
Thank's
Abdul-Rahim Taysir

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.

Two masses are connected by a massless string, passing over a
massless, frictionless pulley as shown in the diagram. Mass
m1 = 5 kg, and is released from rest at a
height h = 4 m above the table. Mass
m2 = 3 kg, and starts at rest on the table.
Ignore friction and air resistance. Take the system to be the two
masses and the earth. What is the potential energy of this system,
in Joules? Next, you let...

Two masses M1=2kg and M2 are attached by a massless cord over a
solid pulley wheel of mass M=4kg, and radius R=5cm. Static Friction
between the cord and the pulley makes the pulley rotate
counter-clockwise when the system is released from rest, M1
accelerates with a magnitude of 3.92 m/s2 .
a) Draw and label the forces acting on the two blocks, and the
pulley. (6 points)
b) Find the tension in the cord between the pulley and M1 (6...

two blocks of masses 3 and 2 kg are connected with a
massless string through an ideal pulley. find the acceleration of
the block and forces in three cases. the friction coefficient
between the horizontal surface and the 3 kg block is a.)0, b.)0.5
and c.)0.8

Two masses, m1 and m2 hang over a frictionless pulley by means
of a massless string. They are perfectly balanced when a flea of
mass m3 is standing on m2. When the flea hops from one mass to the
other, the system acquires an acceleration, a. What is the value of
the flea's mass, m3 in terms of two masses, m1 and m2, and the
acceleration, a? (a) what is m3 in terms of m1 and m2? (b) what is...

Two masses,
m1=3 kg and m2=2 kg are on a horizontal
surface and are connected together via a massless rope. An external
force F pulls on m1 at an angle q=30° from the
horizontal, as shown in the Figure 2 below. There is friction
between m2 and the surface, with coefficients of
friction
ms=0.4 and
mk=0.3, however the friction between m1 and
the surface is negligibly small.
What is the minimum value of F such that the masses will begin...

Two masses m1 = 5 kg and m2 = 3 kg are connected by a
light rope dropped over a pulley as shown in the figure
a) Neglecting friction, what is the acceleration of these
masses?
b) What is the tension of the rope?
c) What will be the acceleration if the coefficient of friction for
the mass m1 is μk = 0.4?

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