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Feb11-13, 11:55 AM
P: 142
Quote Quote by Doc Al View Post
Your thinking is quite correct. In order to stop the object, the force from the ground must be greater that the object's weight. (At least for some time.)

Why do you think that is a problem?
Oh, I'm sorry I didn't make myself clear enough.

The problem is, I don't understand where that greater force comes from.

According to my understanding, The forces on the object are gravity (downward force) and the normal force of the ground (upward) and I think they are equal. But as you just confirmed, the normal force must be greater than that with which gravity is pulling the object. I'm just unable to pin down where that extra normal force is coming from.

Thank you for your prompt reply, Doc Al!