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
box kg meters with constant speed on a rough inclined plane whose
surface is 30 ° with the horizontal. What is the magnitude of the
work done by the friction force?
A
box of mass M = 5 kg slides 10 meters with constant speed on a
rough inclined plane whose surface is 30 ° with the horizontal.
What is the magnitude of the work done by the friction force?

A block of mass m = 3.3 kg is on an inclined plane with
a coefficient of friction μ1 = 0.39, at an
initial height h = 0.53 m above the ground. The plane is
inclined at an angle θ = 44°. The block is then compressed
against a spring a distance Δx = 0.13 m from its
equilibrium point (the spring has a spring constant of
k1 = 35 N/m) and released. At the bottom of the
inclined plane...

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 4.25 kg block is projected at 5.40 m/s up a plane that is
inclined at 30.0° with the horizontal. The block slides some
distance up the incline, stops turns around and slides back down to
the bottom. When it reaches the bottom of the incline again, it is
traveling with a speed of 3.80 m/s. If the coefficient of kinetic
friction between the block and the plane is 0.500, how far up the
incline did the block slide?

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...

A block of weight 3.8 N is launched up a 30 ∘ inclined plane of
length 2.45 m by a spring with spring constant 2.35 kN/m and
maximum compression 0.10 m . The coefficient of kinetic friction is
0.50.
-Does the block reach the top of the incline?
-If so, how much kinetic energy does it have there; if not, how
close to the top, along the incline, does it get?

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...

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