• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Physics Problen

  • Thread starter mustang
  • Start date
169
0
Given: g=9.81 m/s^2.
A 41.7 kg child is in a swing that is attached to robes 2.16 m long. Find the gravitional potiental energy associated with the child relative to the child's lowest position under the following conditions:
B. when the ropes make a 34.7 degree angle with the vertical.

What equation would I use?
 

HallsofIvy

Science Advisor
Homework Helper
41,709
876
Well, potential energy = mgh looks good!

You might also want to draw a picture and use a little trigonometry to determine exactly what h is when the swing makes an angle of 34.7 degrees with the vertical.
 

Related Threads for: Physics Problen

Replies
7
Views
1K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top