A hammer of mass 500 g, moving at 50 m sl, strikes a nail.The nail stops the hammer in a very short time of 0.01 s. What is the force of the nail on the hammer?
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Explanation:
The force of nail on the hammer
F=
Time
Change in momentum of hammer
F=
t
m(v−u)
=
0.01
0.5(0−50)
=−2500N
Negative sign denotes that the force of nail on the hammer is acting in the direction opposite to that of motion of hammer.
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