What is the net force on a falling 100-N barrel hitting a pavement with 5000 N of force?
Net force on the falling barrel.
Answer to Problem 56A
F = 4900 N upward.
Explanation of Solution
Given:
Weight of barrel,
Impulsive force on heating, 5000 N
Formula Used:
From Newton’s third law,
Action force = Reaction force
Calculation:
From Newton’s third law,
The reaction force exerted by pavement on the barrel is 5000 N upward and the weight of barrel is downward.
So,Net force F = Force exerted by pavement on barrel − Weight of barrel
This force will be upward.
Conclusion:
Therefore, the net force on the falling barrel is 4900 N upward.
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