This following applet is [b]Impact force[/b]
Created by prof Hwang Modified by Ahmed
Original project [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1126.0]Impact force[/url]
Two objects with m1 and m2 respectively, released from the same height [b]h[/b] to the ground.
Under the condition: mass m2=2*m1
The time for object to reach the ground are T1 and T2 respectively,
Normally, the air reststance can be ignored for heavy objects, and we know that
T2=T1=, where g is the gravity.
If the impact forces are F1 and F2 respectively.
What is the relation between F1 and F2?
The impact force F=?P/?T, where ?P is the momentum change during the impact and ?T is the impact time.
Both object drop from the same height, so the velocity when impact start is ,
We need to know the relation between ?T2, ?T1 in order to compare F2/F1.
If ?T2= ?T1, then F2=2*F1.
However, is it true that ?T2= ?T1 ???
If ?T2> ?T1 , how to find out relation between F1 and F2?
You can check out the answer with the following simulation:
The impact time ?T and Faverege will be shown. F(t) is available, too!
The impact force is modeled with.