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

Greatest acceleration of the mass

  • Thread starter J89
  • Start date
  • #1
J89
30
0

Homework Statement



A 2.50 kg mass is pushed against a horizontal spring of force constant 25 N/cm on a frictionless air table. The spring is attached to the tabletop, and the mass is not attached to the spring in any way. When the spring has been compressed enough to store 11.5 J of potential energy in it, the mass is suddenly released from rest. Find..

a) Greatest speed that the mass reaches (already solved)
b) Greatest acceleration of the mass..help!



Homework Equations


[tex]\sum[/tex]=ma
k= 1/2mv^2
W=1/2kx^2



The Attempt at a Solution


For part a) I already solved it, and the answer is 3.03 m/s (set 11.5J=1/2mv^2 and solve for v)

For part b, I know you have to use [tex]\sum[/tex]=ma, but I tried several methods and they all failed :(

Help would be appreciated. Thanks!
 

Answers and Replies

  • #2
LowlyPion
Homework Helper
3,090
4
Don't get carried away.

F = m*a so at what point is the force on the block the greatest?

What is the equation that relates what that force is?
 

Related Threads for: Greatest acceleration of the mass

  • Last Post
Replies
11
Views
4K
Replies
8
Views
2K
  • Last Post
Replies
2
Views
2K
Replies
8
Views
2K
  • Last Post
Replies
7
Views
9K
Replies
3
Views
272
Replies
3
Views
10K
  • Last Post
Replies
7
Views
2K
Top