What is the acceleration of a full bottle of water dropped fron a desk
1 answer:
The acceleration of the bottle is downward
Explanation:
When an object is in free fall (=only the force of gravity is acting on it), its acceleration is equal to the acceleration of gravity.
In fact, the only force acting on the object is the force of gravity, whose magnitude is:
where
m is the mass of the object
is the acceleration of gravity
According to Newton's second law, the net force on the object is equal to the product between its mass (m) and its acceleration (a), so
By combining the two equations, we get
Therefore, the acceleration of any object in free fall (and so, also of the bottle in the problem) is .
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Answer:
Explanation:
The definition of angular velocity is as follows:
where is the angular velocity, and
is the frequency.
Frequency can also be represented as:
where is the period, (the time it takes to conclude a cycle)
with this, the angular velocity is:
The period T of rotation around the sun 365 days, thus, the angular velocity:
if we want the angular velocity in rad/second, we need to convert the 365 days to seconds:
Firt conveting to hous
then to minutes
and finally to seconds
thus, angular velocity in rad/second is:
Answer:
f1 = 12.90 Hz
Explanation:
To calculate the first harmonic frequency you use the following formula for n = 1:
( 1 )
It is necessary that the unist are in meters, then you have:
L: length of the string = 60cm = 0.6m
M: mass of the string = 0.05kg
T: tension on the string = 20 N
you replace the values of L, M and T in the expression (1) for getting f1:
Hence, the first harmonic has a frequency of 12.90 Hz