Aconstant net torque is applied to an object. which one of the following will not be constant?
a) angular acceleration
b) angular velocity
c) moment of inertia
d) center of gravity
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Ответ:
B) Angular velocity
Explanation:
The equivalent of Newton's second law for the rotational motions can be written as:
where
I is the moment of inertia
From the formula we see that when a constant net torque
is applied, then the object also has a constant angular acceleration,
.
But we also know that
where
is the angular velocity: so, a constant angular acceleration means that the angular velocity of the object is changing, so the correct answer is
B) Angular velocity
(moment of inertia and center of gravity do not change since they only depend on the mass and the geometry/shape of the object, which do not change)
Ответ:
it all depends on who you ask
Explanation: