Physics 11: How to Calculate Spring Compression with an Applied Force of 6.0 N

  • Thread starter Thread starter roxxyroxx
  • Start date Start date
  • Tags Tags
    Physics Physics 11
Click For Summary
SUMMARY

The discussion focuses on calculating spring compression using Hooke's Law and energy conservation principles. A spring with a spring constant (k) of 50 N/m compresses 12 cm under a force of 6.0 N. When a 2.8 kg box traveling at 1.9 m/s collides with the spring, the kinetic energy (KE) of the box is converted into the spring's potential energy (PE). The correct compression distance of the spring when the box comes to a stop is determined to be 0.45 m.

PREREQUISITES
  • Understanding of Hooke's Law (Ep = 0.5kx²)
  • Knowledge of kinetic energy formula (KE = 0.5mv²)
  • Basic principles of energy conservation
  • Familiarity with unit conversions (e.g., cm to m)
NEXT STEPS
  • Learn about energy conservation in mechanical systems
  • Study advanced applications of Hooke's Law in real-world scenarios
  • Explore the effects of friction on spring compression
  • Investigate different types of springs and their characteristics
USEFUL FOR

Students studying physics, particularly those focusing on mechanics and energy conservation, as well as educators seeking to enhance their teaching of spring dynamics.

roxxyroxx
Messages
48
Reaction score
0

Homework Statement



A spring can be compressed 12 cm by an applied force of 6.0 N. A 2.8 kg box sliding along a frictionless surface approaches this spring at a speed of 1.9 m/s. How far will the spring be compressed when the box comes to a stop?

Homework Equations



Ep = 0.5kx2

0.5mv2 = 0.5kx2

The Attempt at a Solution



I worked out that k = 50 N/m
0.5mv2 = 0.5kx2
0= 25x2

but this doesn't work out because x should be 0.45 m. help?
 
Physics news on Phys.org
When the box comes to a stop all of the Kinetic Energy will be converted to the potential energy of the spring.

Use the formula you had only put the initial KE of the box in before it touches the spring.

And all will be well.
 
great thanks !
 

Similar threads

Replies
17
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 1 ·
Replies
1
Views
1K
  • · Replies 1 ·
Replies
1
Views
4K
  • · Replies 7 ·
Replies
7
Views
8K
Replies
1
Views
1K
  • · Replies 3 ·
Replies
3
Views
6K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 5 ·
Replies
5
Views
10K
Replies
13
Views
2K