- #1

fog37

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I understand that when we drop an object from a certain height on the floor, there is a force of impact (action reaction) once the object reaches the ground. I can easily calculate the final speed of the dropped object before the impact but I need to know either the time or the distance over which the dropped object is brought to rest by the floor to determine the force of impact.

If a metal dumbbell was dropped on a concrete floor, how could I determine the impact force? The collision is clearly inelastic since the dumbbell does not bounce back up. All the kinetic energy is converted into heat of the floor and dumbbell. The coefficient of restitution of the two materials would be zero. How can I know how much the concrete floor and dumbbell deform?

Thanks