How strong would the gravitational attraction be (in units of Earth-pulls) between a Saturn-like planet and the Sun, if the plan
1 answer:
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Answer:
(a) 7 m/s
(b) 931 rad/s
(c) 0.716 s
Explanation:
Gravity would be exerting on the 2 masses
Since heavier, mass 1 (M) would be the one pulling down, while mass 2 is being pulled up.
So the net force on mass 1 is
This force would generate torque on the solid pulley
We can also calculate the pulley moments of inertia, with it being solid
From there we can calculate the angular acceleration of the pulley, which generates the entire system motion
Since the system is moved by a distance of d = 2.5m, the pulley would have turn an angle of
(c)The time it takes to get to this distance is
(b)The final angular speed of the disk is
(a) And so the perimeter speed of the pulley, which is also speed of mass 1 when it comes to d = 2.5 m is
The correct choice is
D. 22 Hz and 42 Hz.
In fact, the beat frequency is given by the difference between the frequencies of the two waves:
In this problem, the beat frequency is , therefore the only pair of frequencies that gives a difference equal to 20 Hz is
D. 22 Hz and 42 Hz.