A 74 kg skier has a speed of 9.2 m/s at point A. She then encounters a 1.75 m deep dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m. Note: You may ignore friction in this problem. a.) How large is the normal force exerted by the snow on the skier at point B? N b.) How much work is done by the normal force on the skier from point A to point B? A 1.75 m TB 12 m/

A 74 kg skier has a speed of 9.2 m/s at point A. She then encounters a 1.75 m deep dip in the snow's surface that has a circular cross section with a radius of curvature of 12 m. Note: You may ignore friction in this problem. a.) How large is the normal force exerted by the snow on the skier at point B? N b.) How much work is done by the normal force on the skier from point A to point B? A 1.75 m TB 12 m/

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A person pushes a cart to the right with a force of 8 N at an angle of 0=40 degrees as shown in the diagram. The cart moves a horizontal distance by 10.0m, what is the work done by the force of gravity? (B) if the cart is moving at a constant velocity, determine the work done by the force of friction. C lastly, calculate the net work on the cart
A 2.5 kg rock is released from rest at the surface of a pond 1.8m deep. As the rock falls, a constant upward force of 4.3N is exerted on it by water resistance. Let y=0 be at the bottom of the pond.A) Calculate the gravitational potential energy of the system, U, when the depth of the rock below the water's surface is 0.50 m.B) Calculate the kinetic energy of the rock, K, when the depth of the rock below the water's surface is 0.50m.C) Calculate the total mechanical energy of the system, E, when the depth of the rock below the water's surface is 0.50m.
F.N An object of mass m=1kg moving along the x-axis passes through the point x =0 with a speed of 2 m/s. The force, applied along the x-axis, varies with position as shown in the figure. 3 a) Calculate the kinetic energy of the object when it passes through x- 0. b) Calculate the work done by the F, force while moving from 1 3 4 X, m x = 0 to x = 4m. c) Calculate the velocity of the object at x= 4m.
An 8.10 kg package in a mail-sorting room slides 2.30 m down a chute that is inclined at 51.8 degrees below the horizontal. The coefficient of kinetic friction between the package and the chute's surface is 0.44. Part A- What is the net work done on the package?Express your answer in joules. Part B-Calculate the work done on the package by gravity. Express your answer in joules. Part C-Calculate the work done on the package by the normal force.Express your answer in joules. Part D- What is the net work done on the package? Express your answer in joules.
A 2.46 kg block moves along a frictionless surface with a speed of 7.83 m/s when it encounters a rough shallow hill, whose sides have a length of l=5.21 m. The hill is low enough so that the block can make it over the hill. Because the surface of the hill is rough (shown in orange in the figure), the block experiences a frictional force of 2.23 N while on the hill. a) What is the speed of the block after it traverses the hill?
A particle moves from A to D in (Figure 1) while experiencing force F = (2i +9j) N. Figure y (m) Ic 4 3- 2- 1- 0. A 0 1 2 B D 1 +x (m) 3 < 1 of 1 Part A How much work does the force do if the particle follows path ABD? Express your answer with the appropriate units. ► View Available Hint(s) W VABD = Submit Part B WACD= Submit HA Part C Value How much work does the force do if the particle follows path ACD? Express your answer with the appropriate units. ► View Available Hint(s) μA + Value pas Units Units P Pearson ? ?
m. m A mass m, = 4.1 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m, = 3 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.83 m. 1) How much work is done by gravity on the two block system? 2) How much work is done by the normal force on m,? 3) What is the final speed of the two blocks? 4) How much work is done by tension on m,? 5) What is the tension in the string as the block falls? 6) The work done by tension on only m, is: O posítive zero negative
As a simple pendulum swings back and forth, the forces acting on the suspended object are the gravitational force, the tension in the supporting cord, and air resistance. Describe the work done by the gravitational force while the pendulum is swinging. a. Positive in increasing velocity on the downswing; negative in decreasing velocity on the upswing b. Negative in increasing velocity on the downswing; positive in decreasing velocity on the upswing c. Positive in decreasing velocity on the downswing; negative in increasing velocity on the upswing d. Negative in increasing velocity on the downswing; negative in decreasing velocity on the upswing A satellite in circular orbit around the Earth moves constant speed. This orbit is maintained by the force of gravity between the Earth and the satellite, yet no work is done on the satellite. How is this possible? a. No work is done if there is no contact between objects. b. No work is done because there is no gravity in space. c. No work…
Starting from rest, a 6.2-kg block slides 3.2 m down a rough 37-degree incline. The coefficient of kinetic friction between the block and the incline is μk = 0.55. a) Determine the work done by the friction force between block and incline. b) Determine the work done by the normal force. c) Determine the net work done on the block.
The overworked Amazon delivery person is driving up a steep hill with an incline of 29 degrees when a box they forgot to secure starts sliding toward the back of the truck. The 3.1 kg box starts from rest near the drivers seat and slides 2.0 m along the floor to the rear door. The coefficient of kinetic friction between the box and the floor is 0.23. What is the work done by the weight of the box? J What is the work done by the Normal Force? What is the work done by the frictional force? J What is the net work done on the box? J What is the change in kinetic energy for the box? J How fast is the box moving just before it hits the rear door? S
A physics TA pushes a 20.0 kg equipment cart at a constant velocity for a distance of 16.0 m down the hall. The force she exerts on the cart is directed at an angle 27.0° below the horizontal, and the force of friction opposing the motion of the cart is 44.0 N. Determine the following. a. the magnitude (in N) of the force exerted on the cart by the TA b. the work done (in J) by the force the TA exerts on the cart c. the work done (in J) by the force of friction acting on the cart d. the work done (in J) by the force of gravity acting on the cart
Suppose a car approaches a hill and has an initial speed of 106 km/h at the bottom of the hill. The driver takes her foot off of the gas pedal and allows the car to coast up the hill. a. If the car has the initial speed stated at a height of h = 0, how high, in meters, can the car coast up a hill if work done by friction is negligible? b. If, in actuality, a 750-kg car with an initial speed of 106 km/h is observed to coast up a hill and stops at a height 21.5 m above its starting point, how much thermal energy was generated by friction in J? c. What is the magnitude of the average force of friction, in newtons, if the hill has a slope 2.1° above the horizontal?