Question
In: Physics
A 10 m ramp with a mass of 5.0 kg rests against a wall. The end...
A 10 m ramp with a mass of 5.0 kg rests against a wall. The
end of the ramp touches the wall at a height (h) of 1.5 m. The
center of gravity for the ramp is halfway up the ramp. A crate with
a mass of 10.0 kg rests halfway up the ramp. What forces are
exerted on the ramp by the wall and by the ground, assuming that
the wall is frictionless but the ground is not?
7 points
Solutions
genius_generous answered 2 years agoRelated Solutions
A ladder having a uniform density and a mass m rests against a frictionless vertical wall,...
A ladder having a uniform density and a mass m rests
against a frictionless vertical wall, making angle 48.0° with the
horizontal. The lower end rests on a flat surface where the
coefficient of static friction is µs = 0.370. A window
cleaner with mass M = 2m attempts to climb the
ladder. Given a ladder length of L, what fraction of the
length of the ladder (x / L) will the worker have reached
when the ladder begins to...
A uniform ladder 5.30 m long rests against a frictionless, vertical wall with its lower end 3.10 m...
A uniform ladder 5.30 m long rests against a
frictionless, vertical wall with its lower end 3.10 m
from the wall. The ladder weighs 161 N . The coefficient
of static friction between the foot of the ladder and the ground is
0.390. A painter weighing 741 N climbs slowly up the
ladder.
a)What is the actual size of the frictional force when the
painter has climbed 1.0197 m along the ladder?
b)How far along the ladder can the painter climb before the
ladder starts...
A uniform ladder 5.30 m long rests against a frictionless, vertical wall with its lower end 3.10 m...
A uniform ladder 5.30 m long rests against a
frictionless, vertical wall with its lower end 3.10 m
from the wall. The ladder weighs 157 N . The coefficient
of static friction between the foot of the ladder and the ground is
0.430. A painter weighing 739 N climbs slowly up the
ladder.
How far along the ladder can the painter climb before the ladder
starts to slip?
2) An Elevator with a mass of 2500 Kg rests at a level 10 m above...
2) An Elevator with a mass of 2500
Kg rests at a level 10 m above the base of an elevator shaft. It is
raised to 100 m above the base of shaft, where the cable holding it
breaks. The elevator falls freely to the base of the shaft and
strikes a strong spring. The spring is designed to bring the
elevator to rest and to hold the elevator at the position of
maximum spring compression. Assuming the entire process...
A ladder 10 ft long rests against a vertical wall. If the bottom of the ladder...
A ladder 10 ft long rests against a vertical wall. If the bottom
of the ladder slides away from the wall at a rate of 1.4 ft/s, how
fast is the angle between the ladder and the ground changing when
the bottom of the ladder is 8 ft from the wall? (That is, find the
angle's rate of change when the bottom of the ladder is 8 ft from
the wall.)
A block with a mass of m = 33 kg rests on a frictionless surface and...
A block with a mass of m = 33 kg rests on a frictionless surface
and is subject to two forces acting on it. The first force is
directed in the negative x-direction with a magnitude of F1 = 11.5
N. The second has a magnitude of F2 = 23 N and acts on the body at
an angle θ = 22° measured from horizontal, as shown. write an
expression for the component of net force, Fnet,x, in the x...
A tennis ball is thrown against a wall and rebounced. M(mass of wall)*v (for ball) =2*m(mass...
A tennis ball is thrown against a wall and rebounced. M(mass of
wall)*v (for ball) =2*m(mass of ball) * V(for wall), KE(wall)=1/2 *
Mv2; KE(in)=1/2 *mV2 and
KE(out)=1/2 *mV2+1/2*Mv2 ; If
KE(in)=KE(out), Where did 1/2*Mv2 go? Is the KE
conderved? Prove it.
A 2.00 m long uniform steel bar rests on the ground and against the wall. Both...
A 2.00 m long uniform steel bar rests on the ground and against
the wall. Both the wall and the ground are frictionless. THe steel
bar makes an angle of 50 degrees with the ground. To keep the steel
bar in static equilibrium, a horizontal wite attaches the steel bar
at 0.500m from the bottom to the wall. The mass of the steel bar is
60kg.
a) Draw a free body diagram showing all the forces on the steel
bar...
A ladder of length L = 2.3 m and mass m = 14 kg rests on...
A ladder of length L = 2.3 m and mass m = 14 kg rests on a floor
with coefficient of static friction μs = 0.54. Assume
the wall is frictionless.
A person with mass M = 69 kg now stands at the very top of the
ladder.
What is the normal force the floor exerts on the ladder?
What is the minimum angle to keep the ladder from sliding?
A ladder of length L = 2.8 m and mass m = 16 kg rests on...
A ladder of length L = 2.8 m
and mass m = 16 kg rests on a floor with coefficient of static
friction ?s = 0.51. Assume the wall is
frictionless.
1)
What is the normal force the floor exerts on the ladder?
2) What is the minimum angle the
ladder must make with the floor to not slip?
3) A person with mass M = 69 kg now
stands at the very top of the ladder. What is the...
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