What does Newton's second law of motion state
2 answers:
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Answer:
There are finally 4 rotations per second.
Explanation:
If a trapeze artist rotates once each second while sailing through the air, and contracts to reduce her rotational inertia to one fourth of what it was. We need to find the final angular velocity. It is a case of conservation of angular momentum such that :
Let ,
and
So,
So, there are finally 4 rotations per second. Hence, this is the required solution.
Answer:
New force = 9(initial force)
Explanation:
The force between two charges is given by :
Where
d is the original distance
Let d' is the new distance such that, r' = r/3
New force,
So, the new force becomes 9 times the initial force.