When a net force of 17.0 newtons is applied to a dictionary placed on a frictionless table, it accelerates by 3.75 meters/second
2 answers:
Answer:
Mass of the book is 4.53 kg
Explanation:
It is given that,
The net force applied to a dictionary which is placed on a friction less table is 17 N
Acceleration of the dictionary, a = 3.75 m/s²
The net force acting on the dictionary is given by :
F = m a
m = 4.53 kg
Hence, the mass of the book is 4.53 kg
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The vertical speed of the rod varies inversely as the rotational speed for a given number of complete rotations
The equation that gives the vertical velocity, v₀ is
Reason:
<em>From a similar question, the given parameters appear to be correctly given as follows;</em>
<em>The vertical speed of the rod = v₀</em>
<em>Angular velocity of the = ω₀</em>
Required;
The value of, v₀, so that the rod has made exactly, <em>n</em>, number of turns when it returns to his hand
Where;
n = An integer
Solution;
The time the rod spends in the air is given as follows;
Where;
g = Acceleration due to gravity
t = Time of motion
When the rod returns to his hand, we have, h = 0, therefore;
We have;
Therefore;
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