Concept explainers
To complete: The given problem so that it can be solved using the conservation of mechanical energy.
Explanation of Solution
Introduction:
The law of conservation of mechanical energy states that mechanical energy of the system remains constant when the conservative forces acting in the system.
Explanation:
Mechanical energy is sum of kinetic and potential energy. Consider the following problem, in such way that mechanical energy conservation concept should be used.
“A cartoon character is holding a 50 kg anvil at the edge of the cliff,100 m high. He released it from the edge. Find the velocity of anvil when it reaches the ground.”
(b)
To complete: The given problem so that it can be solved using the Newton’s second law.
(b)
Explanation of Solution
Introduction:
A body is acceleration when it is acted by external force.It is a vector quantity.
According to Newton's second law, the momentum of a body is changed by applying external unbalanced force. The magnitude of force depends on mass times the acceleration of a body.
Conclusion:
The possible problem will be: “A cartoon character is holding a 50 kg anvil at the edge of the cliff and thrown up. A 10 N of force is applied on anvil.Find its acceleration.”
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Glencoe Physics: Principles and Problems, Student Edition
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