The problem involves calculating the final speed of a falling object using kinematics and determining the total mechanical energy at the beginning of the fall using the principle of conservation of energy.
A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energy when it is dropped from the balloon are respectively (acceleration due to gravity = 9.8 m/s²)
Asked in UPSC NDA 2 2019 · Topic: Motion under Gravity (Conservation of mechanical energy in motion under gravity)
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