Three children are sitting on a seesaw in such a way that it balances. A 20- and a 30-kg boy are on opposite sides at a distance of 2.0 m from the pivot. If the third boy jumps off, thereby destroying the balance, what is the initial angular acceleration of the board? (Neglect the weight of the )

Three children are sitting on a seesaw in such a way that it balances. A 20- and a 30-kg boy are on opposite sides at a distance of 2.0 m from the pivot. If the third boy jumps off, thereby destroying the balance, what is the initial angular acceleration of the board? (Neglect the weight of the )

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Question

Definition Definition Rate of change of angular velocity. Angular acceleration indicates how fast the angular velocity changes over time. It is a vector quantity and has both magnitude and direction. Magnitude is represented by the length of the vector and direction is represented by the right-hand thumb rule. An angular acceleration vector will be always perpendicular to the plane of rotation. Angular acceleration is generally denoted by the Greek letter α and its SI unit is rad/s 2 .

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