Question

Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 80.0 kg, down a 60.0° slope at constant speed, as shown below. The coefficient of friction between the sled and the snow is 0.15. (a) How much work is done by friction as the sled moves 40.0 m along the hill? (b) How much work is done by the rope on the sled in this distance? (c) What is the work done by the gravitational force on the sled? (d) What is the total work done?

Answer #1

Suppose the ski patrol lowers a rescue sled carrying an injured
skiier, with a combined mass of 97.5 kg, down a 60.0° slope at
constant speed. The coefficient of kinetic friction between the
sled and the snow is 0.100.
a) How much work in joules, is done by friction as the sled
moves 3l m along the hill?
b)How much work in joules, is done by the rope on the sled over
this distance ?
c) What is the work...

Suppose the ski patrol lowers a rescue sled carrying an injured
skiier, with a combined mass of 75kg, down a 60 degree slope at
constant speed. The coefficient of kinetic friction between the
sled and the snow is 0.100.
A) How much work, in joules, is done by friction as the sled
moves 28m along hill?
B) How much work, in joules, is done by the rope on the sled
over this distance?
C) What is the work, in joules,...

Question: You are in a sled with total mass of 80.0 kg. The sled
starts from rest 10.0 meters up a frictionless ramp inclined at
40.0
1.) Calculate the Gravitational Potential Energy (PEG) at the
top of the ramp.
2.) The PEG has now been converted to Kinetic Energy at the
bottom of the ramp. The sled skids on gravel with coefficient of
kinetic friction μk = 0.875.

An Eskimo returning from a successful fishing trip pulls a sled
loaded with salmon. The total mass of the sled and salmon is 50.0
kg, and the Eskimo exerts a force on the sled by pulling on the
rope. Suppose the coefficient of kinetic friction between the
loaded sled and snow is 0.200. (a) The Eskimo pulls the sled 4.30
m, exerting a force of 1.10 102 N at an angle of θ = 0°. Find the
work done on...

You pull a your friend along in a sled (combined mass is 65 kg),
by pulling the rope at an upward angle of 20 degrees with respect
to the ground with enough force to keep the sled moving at a
constant velocity of m/s. The coefficient of kinetic friction
between the ground and the sled is 0.15. (a) Draw a force diagram
for the friend/sled system. (b) Once you get to constant velocity,
you pull the sled 15 m. What...

A father pulls his young daughter on a sled, with a constant
velocity, a distance of 10.0m. The total mass of the sled and girl
is 35kg and the coefficient of kinetic friction between the sled
runners and the snow is 0.20. The father's pull makes an angel of
the 30 degree with the respect to the horizontal. A). How many
mechanical work dose the father do? B). What is the net mechanical
work done on the girl and sled?...

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...

a sledge loaded with bricks has a total mass of 18.3 kg and is
pulled at a constant speed by a rope inclined at 20.5 degrees above
the horizontal. The sledge moves a distance of 19.1 m 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...

a sledge loaded with bricks has a total mass of 18.3 kg and is
pulled at a constant speed by a rope inclined at 20.5 degrees above
the horizontal. The sledge moves a distance of 19.1 m 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...

ch 6
1:
It is generally a good idea to gain an understanding of the
"size" of units. Consider the objects and calculate the kinetic
energy of each one.
A ladybug weighing 37.3 mg
flies by your head at 3.83 km/h
.
×10
J
A 7.15 kg
bowling ball slides (not rolls) down an alley at 17.5 km/h
.
J
A car weighing 1260 kg
moves at a speed of 49.5 km/h.
5:
The graph shows the ?-directed force
??...

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