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Drop a ball the ⃗p of the ball doesn't remain constant coz an external force(gravity) is acting on it but consider both earth and ball to be one system and this force becomes internal force. Now earth also moves to meet the ball. Hence the ⃗p is⃗ conserved. again look at scenario and think over energy conservation, we say that the TOTAL MECHANICAL ENERGY OF BALL IS CONSERVED even though the external force (gravity) is acting. Pls enlighten.?
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Drop a ball the ⃗p of the ball doesn't remain constant coz an external...
Conservation of Momentum

When we drop a ball, the momentum of the ball changes as an external force (gravity) acts on it. However, if we consider both the ball and Earth as a system, this force becomes an internal force and the momentum of the system remains conserved. This is because the momentum lost by the ball is gained by the Earth due to their mutual gravitational attraction.

Conservation of Energy

Energy is also conserved in this system, despite the external force of gravity acting on the ball. When the ball is dropped, its potential energy decreases while its kinetic energy increases. At the same time, the Earth also moves towards the ball, gaining kinetic energy. The total mechanical energy of the system (ball and Earth) remains conserved as the decrease in potential energy of the ball is balanced by an increase in kinetic energy of the ball and the Earth.

Conclusion

In summary, when we drop a ball, the momentum and energy of the ball and Earth system are conserved. The external force of gravity becomes an internal force, allowing momentum to remain conserved. The decrease in potential energy of the ball is balanced by an increase in kinetic energy of both the ball and the Earth, allowing energy to remain conserved.
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Drop a ball the ⃗p of the ball doesn't remain constant coz an external...
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Drop a ball the ⃗p of the ball doesn't remain constant coz an external force(gravity) is acting on it but consider both earth and ball to be one system and this force becomes internal force. Now earth also moves to meet the ball. Hence the ⃗p is⃗ conserved. again look at scenario and think over energy conservation, we say that the TOTAL MECHANICAL ENERGY OF BALL IS CONSERVED even though the external force (gravity) is acting. Pls enlighten.?
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Drop a ball the ⃗p of the ball doesn't remain constant coz an external force(gravity) is acting on it but consider both earth and ball to be one system and this force becomes internal force. Now earth also moves to meet the ball. Hence the ⃗p is⃗ conserved. again look at scenario and think over energy conservation, we say that the TOTAL MECHANICAL ENERGY OF BALL IS CONSERVED even though the external force (gravity) is acting. Pls enlighten.? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Drop a ball the ⃗p of the ball doesn't remain constant coz an external force(gravity) is acting on it but consider both earth and ball to be one system and this force becomes internal force. Now earth also moves to meet the ball. Hence the ⃗p is⃗ conserved. again look at scenario and think over energy conservation, we say that the TOTAL MECHANICAL ENERGY OF BALL IS CONSERVED even though the external force (gravity) is acting. Pls enlighten.? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Drop a ball the ⃗p of the ball doesn't remain constant coz an external force(gravity) is acting on it but consider both earth and ball to be one system and this force becomes internal force. Now earth also moves to meet the ball. Hence the ⃗p is⃗ conserved. again look at scenario and think over energy conservation, we say that the TOTAL MECHANICAL ENERGY OF BALL IS CONSERVED even though the external force (gravity) is acting. Pls enlighten.?.
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