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Ghella [55]
3 years ago
5

An object has an angular velocity. It also has an angular acceleration due to torques that are present. Therefore, the angular v

elocity is changing. What happens to the angular velocity in the following cases? (a) additional torques are applied so as to make the net torque suddenly equal to zero
Physics
1 answer:
shusha [124]3 years ago
8 0

Answer:

 α = 0 ,    w = w₀

Explanation:

Torque is related to angular acceleration by Newton's second law for rotational motion.

        τ = I α

Where τ is the torque, I the moment of inertia and α the angular acceleration.

If we apply an external torque for the sum of all torques to be zero, the angular acceleration must fall to zero

         α = 0

 

Since the acceleration is zero, the angular velocity you have at that time is constantly killed.

           w = w₀ + α t

          w = w₀ + 0

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Answer:

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3 years ago
A box-shaped metal can has dimensions 5 in. by 19 in. by 4 in. high. All of the air inside the can is removed with a vacuum pump
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From the question we are told that

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This pressure is equivalent to the atmospheric pressure which has a constant value of  p = 14.7 pi

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