Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Kinetic Energy and Potential Energy question:
http://d.pr/i/vcK4
The gymnast descends from position B and regains contact with the trampoline when it
is in its unstretched position. At this position, her centre of mass is 3.2 m below its
position at B.
Calculate her kinetic energy at the instant she touches the unstretched trampoline
 one year ago
 one year ago
Kinetic Energy and Potential Energy question: http://d.pr/i/vcK4 The gymnast descends from position B and regains contact with the trampoline when it is in its unstretched position. At this position, her centre of mass is 3.2 m below its position at B. Calculate her kinetic energy at the instant she touches the unstretched trampoline
 one year ago
 one year ago

This Question is Closed

adnanchowdhuryBest ResponseYou've already chosen the best response.0
nope. That's PE of when the person is at B.
 one year ago

timo86mBest ResponseYou've already chosen the best response.0
and i will be ke once the person reaches back
 one year ago

lalalyBest ResponseYou've already chosen the best response.1
kinetic energy =3.2/4.2 *2264
 one year ago

stormfire1Best ResponseYou've already chosen the best response.1
@lalaly: Wow...that's much more shorter than the stuff I was about to post but it's deadon.
 one year ago

stormfire1Best ResponseYou've already chosen the best response.1
Well, almost :) (3.2/4.2)*2264
 one year ago

stormfire1Best ResponseYou've already chosen the best response.1
At any rate, what lalaly did was calculate the total PE from point A to B given 4.2m, 55kg and g (mgh = 2264J). Her KE at point B will be equal to this. Once you know those two things, you should be able to see that (3.2/4.2)*2264J will be the amount of KE at the point where the girl just touches the unstretched trampoline.
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.