Hooke's law and shm help

  • #1
hooke's law and shm help plz

Homework Statement


a 4 kg mass is placed on a spring (k = 40n/m) which hangs vertically. the mass is allowed to oscillate in shm. the maximum distance the mass travels in any one direciton is 30cm


Homework Equations


k = 40 n/m
distance = 30 cm
mass = 4 kg
Fspring = -kx
net force = Fspring-mg



The Attempt at a Solution


Fspring = -kx
Fspring = -(40) (.3) = -12 (wrong answer)
 

Answers and Replies

  • #2
Doc Al
Mentor
45,010
1,284


What are you asked to find?
 
  • #3


o lol you're asked to find :
a) how many meters is the spring streched?
b) if the mass is lowered 20cm and released, what will be its period of oscillation?
 

Related Threads on Hooke's law and shm help

  • Last Post
Replies
7
Views
3K
  • Last Post
Replies
6
Views
4K
  • Last Post
Replies
5
Views
2K
  • Last Post
Replies
2
Views
4K
  • Last Post
Replies
9
Views
735
Replies
6
Views
21K
  • Last Post
Replies
11
Views
9K
  • Last Post
Replies
3
Views
2K
Replies
1
Views
2K
  • Last Post
Replies
3
Views
3K
Top