Sunday
September 21, 2014

Homework Help: Spring stiffness

Posted by Henri on Wednesday, April 22, 2009 at 7:54am.

A spring has stiffness of 100Nmm, the initial compression of the spring is 15mm, and it is then compressed to 65mm.
a)Find potential energy at 15mm:
K=100Nmm*1000=100000Nm
Ep=Kc^2/2
Ep=(100000*0.015^2)/2
Ep=11.25 joule (ans.)
b)Find Ep at 65mm:
Ep2=(100000*0.065^2)/2
Ep2=211.25 joule(ans.)
c)Find the work done during compression:
W.D.=Ep2-Ep1
W.D.=211.25J-11.25J
W.D.=200Joule

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physic - A spring has stiffness of 100Nmm, the initial compression of the spring...
Math check please - A spring has stiffness of 100Nmm, the initial compression of...
Please check my math - A spring has stiffness of 100Nmm, the initial compression...
Please check my math 2 - A spring has stiffness of 100Nmm, the initial ...
science - A horizontal spring-mass system has low friction, spring stiffness 210...
Physics - Pushing on the pump of a soap dispenser compresses a small spring. ...
physics - Pushing on the pump of a soap dispenser compresses a small spring. ...
Physics - A spring has a spring stiffness constant, k, of 420 N/m . 1. How much ...
phy - A vertical spring (ignore its mass), whose spring stiffness constant is ...
Physics - An ideal spring with a stiffness of 329 N/m is attached to a wall, and...

Search
Members