Little help in mass on a spring

  • Thread starter Thread starter Akibarika
  • Start date Start date
  • Tags Tags
    Mass Spring
AI Thread Summary
To determine the period of oscillation for a mass-spring system, use Hooke's law (F = -kx) to find the spring constant (k). The force exerted by the hanging mass can be calculated using F = mg, where m is the mass and g is the acceleration due to gravity (approximately 9.81 m/s²). By equating mg to -kx, you can solve for k. Once k is known, the period of oscillation can be calculated using the formula T = 2π√(m/k). This approach effectively combines the principles of harmonic motion with the characteristics of the spring.
Akibarika
Messages
8
Reaction score
0

Homework Statement


a steel spring that it extends by 10cm in equilibrium when you attach the upper end of the spring to a fixed support and hang a weight of 100g at the lower end.

I want to know how to use the equation for the harmonic oscillator to determine the period of the up and down oscillation.


Homework Equations


F = -kx
F = ma

The Attempt at a Solution


I want to use F = ma and F = -kx
so ma = -kx
k = ma/-x
= 0.1*a/-0.1
= -a

but I don't know the a, is the a for 9.81? and maybe I was wrong in the beginning

Thanks a lot
 
Physics news on Phys.org
Use Hooke's law (F = -kx) to find the spring constant. What force is exerted on the spring by the hanging mass?
 
so I can use F = mg
=> mg = -kx ?

is that right?
 
Yes, that's how you can find the spring constant.
 
thank you very much! cheers
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top