Hooke's law and shm help

  • #1
superaznnerd
59
0
hooke's law and shm help please

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 anyone 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
45,463
1,954


What are you asked to find?
 
  • #3
superaznnerd
59
0


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?
 

Suggested for: Hooke's law and shm help

  • Last Post
Replies
5
Views
372
Replies
4
Views
306
Replies
1
Views
511
Replies
5
Views
333
Replies
18
Views
881
  • Last Post
Replies
9
Views
505
Replies
28
Views
2K
Replies
2
Views
184
Replies
15
Views
457
Top