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Oscillations and mechanical energy

  • Thread starter Knfoster
  • Start date
  • #1
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Homework Statement



A mass-spring system oscillates with an amplitude of 3.30 cm. If the spring constant is 231 N/m and the mass is 537 g, determine the mechanical energy of the system.


Homework Equations



Mechanical energy is potential energy plus kinetic energy

The Attempt at a Solution



How do I go about starting this problem?
 

Answers and Replies

  • #2
berkeman
Mentor
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Are you familiar with the equation for the energy stored in a compressed (or extended) spring, in terms of k and delta-x?
 
  • #3
45
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1/2*k*delta x but I'm not given delta x am I? or is the amplitude delta x? and if it is then what do I use for velocity in the 1/2 mv^2 ?
 
  • #4
23
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it's 1/2*k*delta x squared. The max amplitude is your delta x, and since you're considering the situation at max amplitude, the velocity is zero, and so you have just potential energy.

Good luck!
Arjun
 
  • #5
45
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Thank you
 

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