Spring question

by cdbowman42
Tags: spring
cdbowman42 is offline
May3-11, 12:16 PM
P: 14
1. The left end of a spring is attached to a wall, When Bob pulls on the right end with a 200N force, he stretches the spring my 20cm. The same spring is then used for a tug-of-war between Bob and Carlos. Each pulls on his end of the spring with a 200N force. How far does Bob's end of the spring move?

[b]2. F=kx

3. Isn't this the same principal as the spring being attached to the wall. Doesn't the wall exert an equal and opposite 200N force since the spring does not move once it is strecthed? If this is so, I believe the answer would be 10cm, because Carlos pulls the spring another 10cm.
Phys.Org News Partner Science news on Phys.org
Simplicity is key to co-operative robots
Chemical vapor deposition used to grow atomic layer materials on top of each other
Earliest ancestor of land herbivores discovered
Doc Al
Doc Al is offline
May3-11, 12:31 PM
Doc Al's Avatar
P: 40,875
Sounds good to me. The key is to realize that the total stretch of the spring is the same in both cases.

Register to reply

Related Discussions
Spring question Classical Physics 7
Spring Question Introductory Physics Homework 2
Spring Question Introductory Physics Homework 5
spring question Introductory Physics Homework 3
Spring Question Introductory Physics Homework 3