Posted by Dave on Saturday, February 5, 2011 at 11:02pm.
A child of mass 40.0 kg is swinging on a swing with ropes of length 4.0 m. How long does it take the child to swing from the maximum height on one side to the other?

Physics  drwls, Sunday, February 6, 2011 at 2:20am
Half of the period of the swing (which is essentially a pendulum).
It will be independent of the mass.
The period of a pendulum is
2 pi sqrt(L/g)
Half of that will be your answer.
Having two ropes instead of one does not change the formula from that of a simple pendulum.

Physics  Dave, Sunday, February 6, 2011 at 2:35am
Thanks. I was confused by the way the question was worded and my answer was 2 times bigger than what the answer is supposed to be.
Answer This Question
Related Questions
 Physics  A 35kg child is swinging on a swing with length 2.8m to the bottom of...
 Physics  A 50 kg child sits in a swing suspended with 3.8 mlong ropes. The ...
 Physics PLEASE HELP  A 80 kg child sits in a swing suspended with 2.6 mlong ...
 PHYSICS PLEASE HELP  A 80 kg child sits in a swing suspended with 2.6 mlong ...
 Physics  A 40 kg child sits in a swing suspended with 2.5 m long ropes. The ...
 physics  A 120 N child is in a swing that is attached to ropes 2.20 m long. ...
 Physical Science ASAP  A child weighing 200 newtons is sitting in the center of...
 Physics Energy and Work Done  A 390N child is in a swing that is attached to a...
 Physics  A 40.0kg child is in a swing that is attached to ropes 2.00m long. ...
 physics  A 31.0 kg child on a swing reaches a maximum height of 1.92 m above ...
More Related Questions