Question

A 2400kg block of granite is pulled up an inclined plane at a constant speed of 1.3 m/s by an electric motor. The coefficient of kinetic friction between the granite and the surface is .18 … (a) How much work is done by gravity, friction, & the motor? (b) How much power must be supplied by the motor? (Pulled a distance of 50 meters in the x-direction and 30 meters in the y-direction)

Answer #1

A block of mass4 kgkg is dragged up an inclined
plane. The plane is inclined at an angle of 45degrees to the
horizontal. The coefficient of kinetic friction between the block
and the plane is 0.5.
What force is needed to drag the block up the plane at a
constant speed?
What force is needed to accelerate the block up the plane at a
rate of 5 meters per second squared?
If the force acting in Part-B drags the block by...

A
10 kg block is launched up a plane inclined at a 15° angle. The
initial speed of the block is 5 m/s.
a) Using Newton's laws of motion and the equations of
kinematics, calculate how far up the inclined plane does the block
slide in the absence of friction?
b) Using work and energy, answer the question in part (a) in
the presence of friction, taking the coefficient of kinetic
friction between the block and the surface to be...

2. A block slides down a plane inclined at 35o with
respect to the horizontal, with coefficient of kinetic friction
0.2. Find the ratio of the time taken to slide down the plane
starting from rest, compared to the time it would take to slide
down the plane if it were frictionless.
3. A 20 kg block slides frictionlessly down an inclined plane
that is 2.8 m long and 1.2 m high. A person pushes up against the
block, parallel...

a 4.0 block starts from rest and slides down a plane
inclined at 60° horizonta l. The coefficient of kinetic friction
between the Surface and the block is 0.20. The work done by
friction on the block is?

A block with mass ?1 is placed on an inclined plane with slope
angle ? and is connected to a hanging block with mass ?2 by a cord
passing over a small, frictionless pulley. The coefficient of
static friction is ?s, and the coefficient of kinetic friction is
?k.
(a) Find the value of ?2 for which the block of mass ?1 moves up
the plane at a constant speed once it is set in motion
(b) Find the value...

In the figure, a 5.40 kg block is sent sliding up a plane
inclined at θ = 37.0° while a horizontal force
of magnitude 50.0 N acts on it. The coefficient of
kinetic friction between block and plane is 0.330. What are the
(a) magnitude and (b) direction
(up or down the plane) of the block's acceleration? The block's
initial speed is 4.30 m/s. (c) How far up the
plane does the block go? (d) When it reaches its
highest...

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....

A 6.20 kg block is pushed 9.50 m up a smooth 36.0 ∘inclined
plane by a horizontal force of 70.0 N . If the initial speed of the
block is 3.50 m/s up the plane.
Calculate the initial kinetic energy of the block.
Calculate the work done by the 70.0 N force.
Calculate the work done by gravity.
Calculate the work done by the normal force.
Calculate the final kinetic energy of the block.
Please explain

A block is given an initial push at the bottom of a 22 degree
inclined plane. If the coefficient of kinetic friction between the
block and plane is 0.32, and the initial speed of the block at the
bottom of the incline is 4.00 m/s, how far up the incline does the
block travel before coming to rest?

A sledge loaded with bricks has a total mass of 18.1 kg and is
pulled at constant speed by a rope inclined at 19.5° above the
horizontal. The sledge moves a distance of 19.8m on a horizontal
surface. The coefficient of kinetic friction between the sledge and
surface is 0.500.
(a) What is the tension in the rope?
N
(b) How much work is done by the rope on the sledge?
kJ
(c) What is the mechanical energy lost due...

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