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Physics Problem Help?

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A softball player swings a bat, accelerating it from rest to 2.6 rev/s in a time of 0.20 s . Approximate the bat as a 0.90-kg uniform rod of length 0.95 m, and compute the torque the player applies to one end of it.
asked Oct 23, 2015 in PHYSICS by anonymous

1 Answer

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Mass of bat is  kg.

Uniform rod length is .

Bat swings with an accelertion of 2.6 rev/s in a time of 0.20 s.

Find the torque.

Torque , where I  is the moment of inertia and is the acceleration.

Angular velocity is rad/s.

Angular acceleration is rad/s2.

.

Moment of inertia of rod of length image is .
image

image.

Substitute image and  in .

image

image.

Torque required to produce the acceleration is image N-m.

answered Oct 23, 2015 by casacop Expert
edited Oct 23, 2015 by casacop

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