Question

A package of 20.0 lb is dragged by friction 15.0 feet
up along a moving surface of conveyor belt inclined at angle of
36.9 degrees above horizontal

if the package's speed is a constant 1.0 in/s, how much work is
done on the package by:

a) by friction

b)gravity, and

c) The normal force of the conveyor belt?

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 piece of luggage is being loaded onto an airplane by way of an
inclined conveyor belt. The bag, which has a mass of 10.0 kg,
travels 4.50 m up the conveyor belt at a constant speed without
slipping. If the conveyor belt is inclined at a 30.0° angle,
calculate the work done on the bag by: the force of gravity (Wg)
the normal force (WN) the friction force (Wf) the conveyor belt
(Wconveyor) the net force (Wnet)

The physics of
work on an accelerating object.
a) A sled is
dragged along by a 25.0 N force that is applied at an angle of 50.0
degrees above the horizontal. The sled moves to the right and
friction is negligible, so it is constantly accelerated while the
force is being applied. How much work is done after the sled has
moved 2.5 m?
b) Given the motion
of the sled, how must the downward force of gravity on the...

An
8.20 kg package in a mail-sorting room slides 1.90 m down a chute
that is inclined at 53.6 degrees below the horizontal. The
coefficient of kinetic friction between the package and the chute's
surface is 0.35.
Calculate the works done on the package by friction (J).
Calculate the work done on the package by gravity (J).
Calculate the work done on the package by the normal force
(J).
What is the net work done on the package (J)?

A 16.3 kg block is dragged over a rough, horizontal surface by a
constant force of 184 N acting at an angle of angle 34.9 ? above
the horizontal. The block is displaced 44 m and the coefficient of
kinetic friction is 0.131. 16.3 kg µ = 0.131 184 N 34.9 ? Find the
work done by the 184 N force. The acceleration of gravity is 9.8
m/s 2 . Answer in units of J. 005 (part 2 of 5)...

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....

An object (m = 2.08 Kg) moving on a horizontal surface reaches
the bottom of an incline with a speed of 4.18 m/s. The incline
makes an angle of 37.0 degrees with respect to the horizontal. The
coefficient of kinetic friction between the box and the inclined
surface is 0.300. How far up the inline will the object move before
coming to stop?

A 79.0-kg skier starts from rest and slides down a 36.0-m
frictionless slope that is inclined at an angle of 15.0° with the
horizontal. Ignore air resistance.
(a) Calculate the work done by gravity on the skier and the work
done by the normal force on the skier. Work done by gravity? Work
done by normal force?
(b) If the slope is not frictionless so that the skier has a
final velocity of 4 m/s, calculate the work done by...

You are pulling a
heavy crate (mass m) up a ramp inclined at an angle
θ to the horizontal. The ramp is not a smooth
surface. The rope that you are pulling with is parallel to the
incline.
What forces are acting
on the crate?
Group of answer choices
Friction, gravity, normal force and tension
Gravity and tension
Friction, gravity and tension
Friction
Gravity, normal force and tension
Gravity
Normal force
Tension

A mass m = 12 kg is pulled along a horizontal floor with NO
friction for a distance d =7.2 m. Then the mass is pulled up an
incline that makes an angle θ = 30° with the horizontal and has a
coefficient of kinetic friction μk = 0.49. The entire
time the massless rope used to pull the block is pulled parallel to
the incline at an angle of θ = 30° (thus on the incline it is
parallel...

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