Question

An Eskimo returning from a successful fishing trip pulls a sled loaded with salmon. The total...

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 the sled by friction, and the net work. (b) (b) Repeat the calculation if the applied force is exerted at an angle of θ = 30.0° with the horizontal. (c) The Eskimo pushes the same 50.0-kg sled over level ground with a force of 2.25*10^2 N exerted horizontally, moving it a distance of 6.15 m over new terrain. If the net work done on the sled is 2.60*10^2 J , find the coefficient of kinetic friction. (d) Repeat the exercise with the same data, finding the coefficient of kinetic friction, but assume the applied force is upwards at a 40.0° angle with the horizontal.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A father pulls his young daughter on a sled, with a constant velocity, a distance of...
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?...
The physics of work on an accelerating object. a) A sled is dragged along by a...
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...
1. A 40 kg crate is moving on a level surface. The kinetic frictional coefficient is...
1. A 40 kg crate is moving on a level surface. The kinetic frictional coefficient is 0.447. What horizontalforce is needed to cause the crate to accelerate at 4.1 m/s^2 2. A repressed factory worker pulls a box with mass 102 kg on a horizontal surface with a constant velocity of 3.5 m/s. The coefficient of kinetic friction between the box and the surface is 0.2. a) What force must he apply when he pulls up at an angle of...
A force, F = 25 N, that is inclined at 37° above the horizontal, pulls a...
A force, F = 25 N, that is inclined at 37° above the horizontal, pulls a block of mass 5 kg through a horizontal displacement of 10 m. The coefficient of kinetic friction between the block and the horizontal surface is 0.2. The total work done by all the forces acting on this block is nearly.
A block of mass m = 3.57 kg is drawn at a constant speed of 4.06...
A block of mass m = 3.57 kg is drawn at a constant speed of 4.06 m along a horizontal floor by a rope exerting a constant force of 7.68 N at an angle of 15.0˚ above the horizontal. Determine the work done on the block by the rope, the work done by friction and the coefficient of kinetic friction between the floor and block.
A person pulls a 50-kg crate over a displacement of 40-m along a horizontal floor with...
A person pulls a 50-kg crate over a displacement of 40-m along a horizontal floor with a rope of 100N tension. The rope makes an angle of 37o with the horizontal surface. The floor is rough, exerting a friction force of 60 N. (a) Determine the work done by each of the forces acting on the crate. (b) Determine the final speed of the crate assuming it started from rest.
A 40 kg object is pushed upwards at constant velocity for 8 m along a 30°...
A 40 kg object is pushed upwards at constant velocity for 8 m along a 30° inclined plane by the horizontal force F. The coefficient of kinetic friction between the box and the surface is 0.4. Calculate the work done by, a. The applied force b. The frictional force c. The gravitational force d. The net force
You pull a your friend along in a sled (combined mass is 65 kg), by pulling...
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 sledge loaded with bricks has a total mass of 18.1 kg and is pulled at...
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 construction worker pushes on a 10 kg crate down an inclined plane that is 7.0...
A construction worker pushes on a 10 kg crate down an inclined plane that is 7.0 m long and is inclined at an angle of 20 degrees to the horizontal. As a result, the crate slides down the entire length of the plane with a constant speed of 3.0 m/s. Suppose that the worker pushes directly on the crate in a direction parallel to the incline with a force of 50 N for the entire length of the plane. A)...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT