3
votes
Finding the average force required to stretch a spring
The force required to stretch the spring by $3$ m is $60$ N. The force required to stretch the spring by $4$ m is $80$ N. One interpretation of the question is to simply take the average of these two ...
- 40.9k
1
vote
Accepted
Different methods give different answers to the compression of spring
Both values of $x$ are correct, but correspond to two different situations.
Suppose first that the mass is at rest. The acceleration $a$ is then zero. The sum of the forces on the mass is $F = -kx_1 - ...
- 131
1
vote
Different methods give different answers to the compression of spring
If you put a mass on a spring and let go, when it reaches the new equilibrium position it will still have kinetic energy.
So your conservation of energy problem is incomplete. Should be $mgx = \frac{...
- 6,645
1
vote
Different methods give different answers to the compression of spring
For your energy conservation equation to be correct you cannot simply release the mass on the spring but have to slowly lower it and bring it to rest at the displacement $x$. That requires, in ...
- 63.1k
1
vote
Different methods give different answers to the compression of spring
When you lower a mass a distance of x, the force of gravity is the same all the way down. When you lower a mass and compress a spring, the force of the spring gets bigger as the spring is compressed.
...
- 31.1k
1
vote
Different methods give different answers to the compression of spring
This is happening because you are converting whole amount of gravitational potential energy into the potential energy of spring which will further start oscillating as it will compress more than usual....
- 902
1
vote
Accepted
How to find amount of energy which goes to heat in a system of damped springs in a gravity field?
So, to be clear, you have several bodies that gravitationally attract each other, with some have spring-dampers connected between them too?
Assuming Newtonian gravity and Hookian springs, the PE is ...
- 1,506
Only top scored, non community-wiki answers of a minimum length are eligible