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| 1. |
A person of mass Mis sitting on a swing of length L with angular amplitude θ 0 The person stands when theswing passes through mean position. If the centre of mass moves up by distance I\{I≤≤≤ L\}, then(A) Work done by man, is Mgl(C) Kinetic Energy of man increases(B) Work done by man, is Mgl (1+\varnothing square)(D) Kinetic energy of man remain constant |
| Answer» A person of mass Mis sitting on a swing of length L with angular amplitude θ 0 The person stands when theswing passes through mean position. If the centre of mass moves up by distance I\{I≤≤≤ L\}, then(A) Work done by man, is Mgl(C) Kinetic Energy of man increases(B) Work done by man, is Mgl (1+\varnothing square)(D) Kinetic energy of man remain constant | |