1)A thin rod swings back and forth around one end, like a pendulum. Length of the rod 25m Mass of the rod 45kg The starting angle of the rod, away from the vertical 32 degree (a) Draw a picture. (b) Show where the weight force would act on the rod. (c) Set axes. (d) Calculate the moment of inertia o

1)A thin rod swings back and forth around one end, like a pendulum. Length of the rod 25m Mass of the rod 45kg The starting angle of the rod, away from the vertical 32 degree (a) Draw a picture. (b) Show where the weight force would act on the rod. (c) Set axes. (d) Calculate the moment of inertia o

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Question

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1)A thin rod swings back and forth around one end, like a pendulum.

Length of the rod 25m

Mass of the rod 45kg

The starting angle of the rod, away from the vertical 32 degree

(a) Draw a picture.

(b) Show where the weight force would act on the rod.

(d) Calculate the moment of inertia of the rod.

(e) Calculate the torque produced by the weight force.

(f) Calculate the angular acceleration of the rod.

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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