# Pyhsics

A sled slides down a snow-covered hill at CONSTANT SPEED. If the hill makes an ANGLE of 10degrees ABOVE THE HORIZONTAL, WHAT IS THE COEFFICIENT OF KINETIC FRICTION BETWEEN THE SLED AND THE SNOW?

~>HELP!

1. 👍 0
2. 👎 0
3. 👁 140
1. Well, constant speed means no net force, so friction must equal the component of weight down the hill

mg*mu*cosTheta=mg*SinTheta

TanTheta=mu
check my thinking.

1. 👍 0
2. 👎 0
2. 0.176

1. 👍 0
2. 👎 0
posted by Karl
3. Coefficient of kinetic friction=
tan0- Accelaration/gcos0

1. 👍 0
2. 👎 0
posted by Karl

## Similar Questions

1. ### physics

A sled slides without friction down a small, ice-covered hill. If the sled starts from rest at the top of the hill, its speed at the bottom is 7.60 m/s. What is the height of the hill?

asked by uknown person on December 4, 2017
2. ### physics

Josh starts his sled at the top of a 2.0 m-high hill that has a constant slope of 25 degrees . After reaching the bottom, he slides across a horizontal patch of snow. The hill is frictionless, but the coefficient of kinetic

asked by kevin on March 7, 2012
3. ### physics

A child starts from rest and slides down a snow-covered hill with a slope angle of 47° from a height of 1.8m above the bottom of the hill. The speed of the child at the bottom of the hill is 3.1m/s. Find the coefficient of

asked by sal on October 27, 2018
4. ### physics

A 30kg sled(with rider) slides without friction down a small, ice covered hill. On the first run the sled starts from rest and its speed at the bottom of the hill is 8.50m/s. On the second run the sled starts with a speed of

asked by Shakedown78 on November 29, 2015
5. ### Physics

Josh starts his sled at the top of a 3.0m high hill that has a constant slope of 25 degrees. After reaching the bottom, he slides across a horizontal patch of snow. The hill is frictionless but the coefficient of kinetic friction

asked by Tiffany on June 16, 2014
6. ### Physics

A child insists on going sledding on a barely snow-covered hill. The child starts from rest at the top of the 60 m long hill which is inclined at an angle of 30o to the horizontal, and arrives at the bottom 8.0 s later. What is

asked by Mary on February 11, 2012
7. ### Physics URGENT!!!

Gayle runs at a speed of 9.00 m/s and dives on a sled, initially at rest on the top of a frictionless, snow-covered hill, that has a vertical drop of 20.0 m. After she has descended a vertical distance of 4.00 m, her brother, who

asked by Anonymous on October 15, 2012
8. ### Physics

Could someone please explain how you get this answer??? A skier with a mass of 60.0 kg pushes off with a horizontal speed of 3.0 m/s from the top of a snow covered hill. As he slides down the hill, his height decreases by 42 m

asked by Demere on March 2, 2013
9. ### physics

A child on a sled (total mass 41 kg) slides down a hill inclined at an angle θ = 22° at a constant speed 3.5 m/s. (a) How long does it take the child to travel 40 meters down the slope? (b) What is the frictional force on the

asked by Manny on September 18, 2015
10. ### science

A sled is tied to a tree on a frictionless snow covered hill,as shown.If the sled weighs 77N ,1)Find the magnitude of the tension force T exerted by the rope on the sled .2)Find the magnitude of the normal force applied by the

asked by ZENANDE on May 5, 2016

More Similar Questions