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# Rotational Dynamics and Tangential Acceleration

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A meterstick pivoted about a horizontal axis through the 0 cm end is held in a horizontal position and let go. (a) What is the tangential acceleration of the 100 cm position? (b) Which position has a tangential acceleration equal to the acceleration due to gravity?

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This solution is provided in 93 words. It uses brief calculations for torque and angular acceleration to find the tangential acceleration.

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a) Fg acts on center of meterstick. Therefore, torque T:

T = mg(0.5m)

angular acceleration a ...

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