Question

Two masses, m1 = 4 kg and m2 = 6 kg are connected with
a rope and pulled with a horizontal force F=80 N along a rough
floor with a kinetics friction coefficient µκ=0.2 (Assume that g =
10 ms-2).

the acceleration (in ms-2) is:

Answer #1

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?

Objects with masses m1 = 12.0 kg and
m2 = 8.0 kg are connected by a light string
that passes over a frictionless pulley as in the figure below. If,
when the system starts from rest, m2 falls 1.00
m in 1.48 s, determine the coefficient of kinetic friction between
m1 and the table.
Express the friction force in terms of the coefficient of kinetic
friction. Obtain an expression for the acceleration in terms of the
masses and the...

Two blocks of mass m1 = 9.20 kg and m2 are connected by a light
string. When a horizontal force F = 105 N is applied to m1 as shown
in the figure below, the acceleration of the system is 3.20 m/s2
towards the left and the tension in the string connecting the two
blocks is 62.0 N. The blocks are moving on a rough surface with an
unknown coefficient of kinetic friction. Determine the coefficient
of kinetic friction between...

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.

Objects of masses m1 = 4.00 kg and m2 = 9.00 kg are connected
by a light string that passes over a frictionless pulley as in the
figure below. The object m1 is held at rest on the floor, and
m2 rests on a fixed incline of θ = 37.5°. The objects are
released from rest, and m2 slides 1.10 m down the slope of the
incline in 4.45 s.
A triangular structure is oriented such that its base rests...

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 10 kg box was lying on a smooth surface. A
rope was connected to the box. The box was pulled by the rope at
angle of 30° with the
horizontal. What applied force will keep the box
moving upward at a constant speed?
A 10 kg box was resting on an inclined rough
surface, which makes an angle of
30° with the horizontal. The
coefficient of kinetic friction between the surface and the box is
0.4. The box was...

Objects with masses m1 = 11.0 kg and
m2 = 8.0 kg are connected by a light string
that passes over a frictionless pulley as in the figure below. If,
when the system starts from rest, m2 falls 1.00
m in 1.54 s, determine the coefficient of kinetic friction between
m1 and the table.

Two packing crates of masses
m1 = 10.0 kg
and
m2 = 4.70 kg
are connected by a light string that passes over a frictionless
pulley as in the figure below. The 4.70-kg crate lies on a smooth
incline of angle 35.0°. Find the following.
Two crates are connected to each other by a string that passes
over a pulley, which is attached to the top corner of a wedge. The
crate of mass m1 hangs freely below the pulley....

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