A small block with mass 0.0400 kg is moving in the æy-plane. The net force on the block is described by the potential-energy function U(r, y) = (5.50 J/m?)a? - (3.90 J/m')y". Part A What is the magnitude of the acceleration of the block when it is at the point z = 0.21 m, y = 0.60 m? Express your answer with the appropriate units. Value Units Submit Request Answer Part B What is the direction of the acceleration of the block when it is at the point r = 0.21 m, y = 0.60 m? Express your answer in degrees. ° counterclockwise from the +a-axis Submit Request Answer Provide Feedback

A small block with mass 0.0400 kg is moving in the æy-plane. The net force on the block is described by the potential-energy function U(r, y) = (5.50 J/m?)a? - (3.90 J/m')y". Part A What is the magnitude of the acceleration of the block when it is at the point z = 0.21 m, y = 0.60 m? Express your answer with the appropriate units. Value Units Submit Request Answer Part B What is the direction of the acceleration of the block when it is at the point r = 0.21 m, y = 0.60 m? Express your answer in degrees. ° counterclockwise from the +a-axis Submit Request Answer Provide Feedback

Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby

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

i just need help with C and D A big ship with a mass of 5.95 x 10 7 kg has a speed of 11.0 m/s at some instant. A. What is the ship’s kinetic energy? B. How much work is required to stop it? C. How is work related to the mechanical energy? D. What is the magnitude of the constant force required to stop it as it undergoes a displacement of 2.75 km?
A 100 kg block is pulled at a constant speed of 5.5 m/s across a horizontal floor by an applied force of 137 N directed 37° above the horizontal. What is the rate at which the force does work on the block? W
(Figure 1) is the force-versus-position graph for a particle moving along the x-axis. Figure Fx (N) 4 2 0 -2 -4 1 2 3 -x (m) ▼ Part A Determine the work done on the particle during the interval 0-1 m. Express your answer with the appropriate units. Wo-1 = Units You have already submitted this answer. Enter a new answer. No credit lost. Try again. Submit Part B ΠΑ W1-2 = Submit Value Previous Answers Request Answer Determine the work done on the particle during the interval 1-2 m. Express your answer with the appropriate units. μA Value Units ? www Previous Answers Request Answer ? Units input for part B
Consider a system of a cliff diver and the earth. The gravitational potential energy of the system decreases by 23,000 J as the diver drops to the water from a height of 44.0 m. Determine her weight in newtons. N
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
A 20.0-kg child descends a slide 1.80 m high and reaches the bottom with a speed of 1.25 m/s . Part A How much thermal energy due to friction was generated in this process? Express your answer to three significant figures and include the appropriate units.
You are on vacation in San Francisco and decide to take a cable car to see the city. A 5800-kg cable car goes 460 m up a hill inclined 13° above the horizontal. The system is the car and Earth. Part A Determine the change in the total energy of the system when the car moves from the bottom to the top. Ignore friction. Express your answer with the appropriate units.
Using energy considerations, calculate the average force (in N) a 63.0 kg sprinter exerts backward on the track to accelerate from 2.00 to 7.00 m/s in a distance of 25.0 m, if he encounters a headwind that exerts an average force of 30.0 N against him. N Additional Materials O Reading
A factory worker pushes a 31.2 kg crate a distance of 4.9 m along a level floor at constant velocity by pushing downward at an angle of 28° below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25. Part C How much work is done on the crate by friction during this displacement? Express your answer using two significant figures. W₁ = 416.30 Submit 1 ( Templates Symbols undo rado reset keyboard shortcuts help ΑΣΦΑ / С Part D X Incorrect; Try Again; 3 attempts remaining Wnf= Previous Answers Request Answer How much work is done by the normal force? Submit Templates Symbols undo do reset keyboard shortcuts help ΑΣΦΑ / C Request Answer J J
A small block with mass 0.0400 kg is moving in the xy-plane. The net force on the block is described by the potential-energy function U(x, y) = (5.70 J/m²)x² − (3.90 J/m³)y³. Part A What is the magnitude of the acceleration of the block when it is at the point x = 0.27 m, y = 0.55 m? Express your answer with the appropriate units. a = Submit Part B Value 0 = Request Answer Units ΑΣΦ www. What is the direction of the acceleration of the block when it is at the point x = 0.27 m, y = 0.55 m? Express your answer in degrees. ? ? counterclockwise from the +x-axis