When a 440-Hz tuning fork and a piano key are struck together, five beats are heard. If the pitch of the note on the piano is lo
2 answers:
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The general equation for the forces acting on the passengers at the topmost point of the ferris wheel is
where
mg is the weight of the passengers
R is the normal reaction of the cabin
is the centripetal force
In order to feel weightless, the normal reaction felt by the passengers should be zero. Therefore, the equation becomes:
or
where
is the angular frequency of the wheel and r is its radius. Since we know its radius,
we can calculate the angular frequency:
From which we find the frequency at which the ferris wheel should rotate:
This is the number of revolutions per second, so the number of revolutions per minute will be
where
mg is the weight of the passengers
R is the normal reaction of the cabin
In order to feel weightless, the normal reaction felt by the passengers should be zero. Therefore, the equation becomes:
or
where
we can calculate the angular frequency:
From which we find the frequency at which the ferris wheel should rotate:
This is the number of revolutions per second, so the number of revolutions per minute will be