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Spring,damper and mass

by chandran
Tags: damper, mass, spring
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chandran
#1
Oct6-06, 03:29 AM
P: 139
My observations

1)a spring gives a force proportional to the relative displacement of its ends

2)a damper gives a force proportional to the relative velocity of its ends

What does a mass do

I read in a theory that a mass gives a force proportional to its acceleration
and this force is called inertial force.

But my understanding is that when a force is applied by some agent to a mass it will accelerate. How is that a mass itself applies a force?
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Doc Al
#2
Oct6-06, 11:30 AM
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Quote Quote by chandran
What does a mass do
Think of mass as providing a resistance to changes in motion.

I read in a theory that a mass gives a force proportional to its acceleration
and this force is called inertial force.
Inertial forces only appear as an artifact of viewing things from a noninertial (accelerated) reference frame. (Which is often very useful.)

But my understanding is that when a force is applied by some agent to a mass it will accelerate. How is that a mass itself applies a force?
As long are you are viewing things from an inertial frame, the only forces are those provided by some agent. (Inertial forces have no agent.)


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