Physics

posted by .

A 40.0kg child is in a swing that is attached to ropes 2.00m long. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions:

a) When the ropes are horizontal
b) When the ropes make a 30.0 degree angle with the vertical
c) at the bottom of the circular arc

  • Physics -

    m g h = 40 * 9.8 * h
    how high above bottom of swing is h
    a) h = 2 meters
    b) h = 2 (1 - cos 30)
    c) 0

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. physics

    A 350 N child is in a swing attached to rope 1.75m long. Find the gravitational PE associated with the child relative to her lowest position when the ropes make a 30 degree angle with the vertical
  2. physics

    A 100-N child is in a swing that is attached to ropes 1.90 m long. Find the gravitational potential energy (b) when the ropes make a 35.0° angle with the vertical c) when the child is at the bottom of the circular arc
  3. physics

    A 120 N child is in a swing that is attached to ropes 2.20 m long. Find the gravitational potential energy of the child-Earth system relative to the child's lowest position at the following times. (a) when the ropes are horizontal …
  4. College Physics

    A 22.9-kg child is on a swing attached to ropes that are L = 1.33 m long. Take the zero of the gravitational potential energy to be at the position of the child when the ropes are horizontal. Part A)The child's gravitational potential …
  5. Physics Energy and Work Done

    A 390-N child is in a swing that is attached to a pair of ropes 1.9 m long. Find the gravitational potential energy (in JOULES) of the child–Earth system relative to the child's lowest position at the following times. A) when the …
  6. physics

    A 43 N toy is placed in a light swing that is attached to ropes 1.7 m long. (a) Find the gravitational potential energy associated with the toy relative to its lowest position when the ropes are horizontal. J (b) Find the gravitational …
  7. Physics

    A 350 N child is in a swing that is attached to a 7.50 m long rope. find the gravitational potential energy associated with the child relative to her lowest position when a) the ropes are horizontal, (b) the ropes make a 30 degree …
  8. physics

    A 48.4 N child is in a swing that is attached to ropes 1.24 m long. Find the gravitational potential energy associated with the child relative to her lowest position when (a) the ropes are horizontal
  9. Physics

    A400 N child is swing that is attached tow ropes 2m long , find the gravitational potential energy of the child-earth system relative to the red line level when ropes make an angle with the vertical .
  10. Physics Prob.

    A 22.0 kg child plays on a swing having support ropes that are 2.00 m long. A friend pulls her back until the ropes are 45.0 ∘ from the vertical and releases her from rest. What is the potential energy for the child just as she is …

More Similar Questions