Purchase Solution

Swing - Potential energy, speed etc.

Not what you're looking for?

Ask Custom Question

A 23.0 kg child plays on a swing having support ropes that are 1.90 m long. A friend pulls her back until the ropes are 39.0 (degrees) from the vertical and releases her from rest.

Part a: What is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing?

V= ? J

part b: How fast will she be moving at the bottom of the swing?

v= ?m/s

partc: How much work does the tension in the ropes do as the child swings from the initial position to the bottom?

w= ? J

Purchase this Solution
Solution Summary

The expert examines the potential energy and speed of a swing at the bottom. A step by step solution provided.

Solution Preview

Please refer attachment.

A 23.0 kg child plays on a swing having support ropes that are 1.90 m long. A friend pulls her back until the ropes are 39.0 (degrees) from the vertical and releases her from rest.

Part a: What is the potential energy for the child just as she is released, compared with the potential energy at the bottom of the swing?

Part b: How fast will she be moving at the bottom of the swing?

Part c: How much work does the ...

Purchase this Solution
Free BrainMass Quizzes
Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

The Moon

Test your knowledge of moon phases and movement.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

View More Free Quizzes
Related BrainMass Solutions

  • A gravitational force case is illustrated.

    at extreme positions the gravitational potential energy is maximum.At mean position the kinetic energy is maximum. Thanks and regards The solution examines the gravitational force case of a pendulum swing.

  • Simple Harmonic Motion of pendulum

    At the initial release position, its total energy is equal to its potential energy In the above diagram, So Then the potential energy is When it passes through the lowest point of the swing, the total energy is only the kinetic energy

  • kinetic energy and potenital energy

    What is the tension in the cord when the object is at the lowest point of its swing? At the lowest point of its swing, , where mgr is the initial potential energy.

  • Loss of energy as a child goes to and fro on a swing

    162966 Loss of energy as a child goes to and fro on a swing According to the principle of conservation of energy, when a child plays on a swing the potential energy he possesses at the top of his path is converted to kinetic energy as he falls and back

  • Average power output of man

    Then, by conservation of momentum: Momentum of the bird at take off + Momentum of the swing base = 0 0.052 x 2 + 0.253 x v = 0 or v = - 0.411 m/s As the swing rises, its kinetic energy is converted into gravitational potential energy.

  • Kinetic and Potential Energies in Sports

    Discuss the role of kinetic and potential energies in (a) golf, (b) tennis, and (c) basketball. Potential energy is energy that is stored in an object. If you stretch a rubber band, you will give it potential energy.

  • the speed of the bullet before it hit the block

    The total energy is the kinetic energy is 0.5(M+m)v^2 = 0.5(5+ 0.002)v^2 = 2.501v^2. Then it block swings a height of 2.24 mm = 0.00224 m. So the totoal energy is the potential energy (M+m)gh = (5+0.002)*9.8*0.00224.

  • Harmonic Motion: 8 Questions

    Although the swing at 8 degrees has to cover a distance larger than the swing at 4 degrees, the swing at 8 degrees will have a higher potential energy and therefore would swing faster to cover the larger distance.

  • Kinetic energy of a crane carrying a mass - swing of mass

    Thus this energy gets converted fully to the potential energy at the top point of the pendulum. See the attached figure.

View More Related Solutions