Two movers are pushing a large crate with a force of 60.0 n each. one pushes north, the other east. what is the equilibrant forc
1 answer:
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1) True.
Uniform circular motion means that the angular velocity
is constant, and since the centripetal acceleration is given by
if
is constant, then a is constant.
2) The correct answer is
<span>a.) the angular velocity and linear velocities are the same
The three knots are in fact on a circle, therefore the angular velocities are the same (because they cover the same angle in the same time) and the linear velocities are the same as well, because it is given by
</span>
and since both r(distance from the center) and are the same, v is also the same.
3) <span>b.) toward the center
In fact, an object can move on a circular path only if there is a force pushing towards the center. This force is called "centripetal force".</span>
Uniform circular motion means that the angular velocity
if
2) The correct answer is
<span>a.) the angular velocity and linear velocities are the same
The three knots are in fact on a circle, therefore the angular velocities are the same (because they cover the same angle in the same time) and the linear velocities are the same as well, because it is given by
</span>
and since both r(distance from the center) and
3) <span>b.) toward the center
In fact, an object can move on a circular path only if there is a force pushing towards the center. This force is called "centripetal force".</span>
We can use the equation 
to calculate the frequency.
Rearranging this gives us
.
So the frequency is
, which equals 0.42 hertz
(to 2 decimal places).
Rearranging this gives us
So the frequency is
(to 2 decimal places).