(Figure 1)A roller coaster car may be approximated by a block of mass m. The car, which starts from rest, is released at a height h above the ground and slides along a frictionless track. The car encounters a loop of radius R. as shown. Assume that the initial height his great enough so that the car never loses contact with the track. Figure h < 1 of 1 Part A Find an expression for the kinetic energy of the car at the top of the loop. Express the kinetic energy in terms of m, g, h, and R. ► View Available Hint(s) K= Submit ▶ Part B [5] ΑΣΦ Provide Feedback Request Answer ?

(Figure 1)A roller coaster car may be approximated by a block of mass m. The car, which starts from rest, is released at a height h above the ground and slides along a frictionless track. The car encounters a loop of radius R. as shown. Assume that the initial height his great enough so that the car never loses contact with the track. Figure h < 1 of 1 Part A Find an expression for the kinetic energy of the car at the top of the loop. Express the kinetic energy in terms of m, g, h, and R. ► View Available Hint(s) K= Submit ▶ Part B [5] ΑΣΦ Provide Feedback Request Answer ?

Name: (Figure 1)A roller coaster car may be approximated by ablock of mass
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: (Figure 1)A roller coaster car may be approximated by ablock of mass m. The car, which starts from rest, isreleased at a height h above the ground and slides alonga frictionless track. The car encounters a loop of radius R,as shown. Assume that the

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

2
The car C and its contents have a weight of 500 lb, whereas block B has a weight of 240 lb. The car is released from rest. (Figure 1) Figure приватний PIS 20° 30 ft 1 of 1 Part A Determine the car's speed when it travels 30 ft down the 20° incline. Suggestion: To measure the gravitational potential energy, establish separate datums at the initial elevations of B and C. Express your answer to three significant figures and include the appropriate units. V = μA Value Submit Request Answer Units < Return to Assignment Provide Feedback ?
A 2.25 kg block is placed at position A on the 4.10 m track. path CD of the track are frictionless, while path AB and path BC are rough with a coefficient of friction of 0.280. The length of BC is 1.20 m. The block starts from rest at A and stops at D. What is: Potential Energy at A Kinetic Energy at A Kinetic Energy at B Speed at B Kinetic Energy at C Speed at C Potential Energy at D
(a) You slide a book on a long horizontal table with the initial speed of 4.5 m/s. At some point A on the table, the book encounters a rough unpolished patch where the coefficient of friction starts increasing linearly from 0.10 at point A to 0.60 at a distance of 12.5 m from A. i. How far this box slides before stopping. (use work-energy theorem) ii. What is the coefficient of friction at the stopping point? iii. What would happen if instead you slide the book from the other end of the table? (in that case you can assume some point B where µ is the maximum given value and it reduces linearly to 0.1 a distance of 12.5 m from point B)
A sled and rider with a combined weight of 63 kg are at rest on the top of a hill 19 m high. (a) What is their total energy at the top of the hill? J(b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill? J
A ski stuts mom rest and slides down a 27 degree incline 80 m long. Part A If the ooefticient of friction is 0.070. what at the ski's speed at the base of the incline? Express your answer using two significant figures. Part B It the snow is level at the foot of the incine and has the same coelfeient of friction, how far will the ski travel along the level? Use energy method.Express your answer using two significant figures.
A box of mass 'm' is pushed into a spring with spring constant 'k'. The spring is displaced a total length of Δx, and then we let go of the box. From the work-energy theorem, what is the final velocity of the box after we let go?
A volcanic ash flow is moving across horizontal ground when it encounters a 10 upslope. The front of the flow then travels 920 m up the slope before stopping. Assume that the gases entrapped in the flow lift the flow and thus make the frictional force from the ground negligible; assume also that the mechanical energy of the front of the flow is conserved.What was the initial speed of the front of the flow?
Ms. Dewitte's son, Theo, slides down a slide, from rest, with a length of 2.00 m at an incline of 50° above the horizontal. He has a mass of 22.0 kg and he reaches the bottom of the slide with a velocity of 2.90 m/s. Briefly explain if total mechanical energy was conserved and what energy transfers otcurred?
For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at a constant speed in a time of 1.60 s. What is the metabolic power, in kW (kiloWatts)? Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.
A child of mass m = 16 kg slides down a slide of height h = 2.7 m without friction. Let gravitational potential energy be zero at ground level. a)Write an expression for the child's total mechanical energy, E, at the top of the slide, in terms of the variables in the problem and the acceleration due to gravity g. b)Calculate the change in the child's potential energy, ΔU in joules, from the top to the bottom of the slide at ground level (i.e. ΔU = Uground - Utop). c)What is the child's final speed, vf in m/s?
A student slides her 67 kg desk across the level floor of her dormitory room a distance 8 m at constant speed. If the coefficient of kinetic friction between the desk and the floor is 0.32, how much work did she do?