Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Textbook Question
Chapter 12, Problem 4PLA
A mass of 0.400 kg is raised by a vertical distance of 0.450 min the earth’s gravitational field. What is the change in its gravitational potential energy? Show your work.
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- A 2.25 kg raccoon falls from a tree branch 25m above the ground into another branch 13m above the ground. What was the change in the raccoon's gravitational potential energy? Show your work.arrow_forwardAn 1800-kg sports car accelerates with 7.0 m/s2 over a distance of 100 m. How much work did the engine exert over this distance, ignoring friction? Show your work.arrow_forwardA car (2000 kg) drives down the level highway for 200 m. Calculate the work done by the gravitational force on the car. Show your work.arrow_forward
- A car mass is 1000 kg drives on a bridge over a river at a speed of 8m/s. The bridge is 12 meters on the greatest a) What is the total energy of the car while it is on the bridge? Show your work. b) Now imagine the car is parked on a very tall building. How big would the building need to be for the car to have the same total energy that it did in part ? show your work 8 9 *- *+ 5 T G 6 Y H & 7 U J 8 *F9 M K F10 9 O F11 0 L P F12 PrtSc tarrow_forwardA 1.00 kg ball is dropped from the top of a building. Just before striking the ground, the ball's speed is 12.0m/s. What was the ball's gravitational potential energy, relative to the ground, at the instant it was dropped? Show your work and calculate the final answer.arrow_forwardA player kicks a soccer ball (0.5 kg mass) at the goal. It hits the crossbar at a height of 2.5 m, while moving at a speed of 30 m/s. a) What is the total energy of the ball when it hits the crossbar? Show your work. b) A soccer ball sits at rest on top of a building. How tall does the building have to be so that the ball has the same energy as the soccer ball in part a)? Show your work.arrow_forward
- Chris jumps off a bridge with a bungee cord (a heavy stretchable cord) tied around his ankle, as shown in the figure below. He falls for 15 m before the bungee cord begins to stretch. Chris’s mass is 75 kg. If we neglect air resistance and Chris drops another 43 m before coming to a stop, find the spring constant ? of the bungee cord. Ignore the mass of the cord and treat Chris as a particle. please show your work, including diagrams, algebraic equations, and enough written explanations that somebody who is not familiar with the problem could understand what you are doing.arrow_forwardA cat massing 4 kg jumps off a table from a height of 1.3 m above the ground and lands on a cushion that is 40 cm thick. The cushion stops the cat over a distance of 20 cm. If the cushion acts like a spring, find the spring constant. Show your workarrow_forwardSolve each problem and show all work The Washington Monument is 555 feet tall. If 1 meter = 3.28 feet, what is the height of the Washington Monument in meters? A worker assigned to the restoration of the Washington Monument is checking the condition of the stone at the very top of the monument. A nickel with a mass of 0.005 kg is in her shirt pocket. What is the gravitational potential energy (GPE) of the nickel at the top of the monument? What is the kinetic energy (KE) of the nickel in her shirt pocket at the top of the monument? If the nickel accidentally falls out of her pocket, what will happen to the gravitational potential energy (GPE) of the nickel as it falls to the ground? If the nickel accidentally falls out of her pocket, what will happen to the kinetic energy (KE) of the nickel as it falls to the ground?arrow_forward
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Kinetic Energy and Potential Energy; Author: Professor Dave explains;https://www.youtube.com/watch?v=g7u6pIfUVy4;License: Standard YouTube License, CC-BY