Go Back   Physics Help Forum > High School and Pre-University Physics Help > Kinematics and Dynamics

Kinematics and Dynamics Kinematics and Dynamics Physics Help Forum

Reply
 
LinkBack Thread Tools Display Modes
Old Dec 30th 2009, 03:45 PM   #1
Junior Member
 
Join Date: Dec 2009
Posts: 7
Spring Question

Tell me if this question makes any sense.

One block moving with velocity v_0 hits a system of two blocks at rest connected by an undeformed spring with spring constant k. Find the minimum distance between the blocks attached to the spring. All masses are of equal mass.

I'm not quite sure what to do with this. I don't see what's limiting the distance between the blocks.
fireemblem13 is offline   Reply With Quote
Old Dec 30th 2009, 07:31 PM   #2
Senior Member
 
Join Date: Sep 2009
Location: india
Posts: 409
(v0/3)* root over(m/k) ?
r.samanta is offline   Reply With Quote
Old Dec 30th 2009, 11:27 PM   #3
Physics Team
 
Join Date: Feb 2009
Posts: 1,425
I agree with you. However, if we stretch the problem a bit and assume that the second mass of the spring mass system is fixed, then you could work out the initial k.e. of the two blocks and equate it to the final elastic p.e. when they stop, i.e.

K.E. = 0.5 k x ^2.

If L is the initial length of the spring, then the min distance would be L - x.
physicsquest is offline   Reply With Quote
Reply

  Physics Help Forum > High School and Pre-University Physics Help > Kinematics and Dynamics

Tags
question, spring



Thread Tools
Display Modes


Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
Spring force question coolbyte Kinematics and Dynamics 1 Mar 23rd 2013 04:27 PM
a spring question from momentum and NRG~! nicefatsow Energy and Work 1 Oct 24th 2009 09:38 PM
a elastic spring question nicefatsow Equilibrium and Elasticity 1 Oct 23rd 2009 09:06 PM
Spring Question rjsci13 Kinematics and Dynamics 1 Oct 4th 2009 09:52 PM
Spring Question JOHNH Advanced Mechanics 0 Dec 3rd 2008 10:39 AM


Facebook Twitter Google+ RSS Feed