How do I find angular speed of a rotating mass
1 answer:
You might be interested in
Answer:
option c
Explanation:
Kinetic energy is due to the speed of a body.
When speed is doubled, the kinetic energy is quadruple.
From third equation of motion, braking distance is also proportional to square of speed. Thus, when speed is doubled, the braking distance is quadruple.
Thus, option c is correct.
Answer:
The tension on the clotheslines is
Explanation:
The diagram illustrating this question is shown on the first uploaded image
From the question we are told that
The distance between the two poles is
The mass tie to the middle of the clotheslines
The length at which the clotheslines sags is
Generally the weight due to gravity at the middle of the clotheslines is mathematically represented as
let the angle which the tension on the clotheslines makes with the horizontal be which mathematically evaluated using the SOHCAHTOA as follows
=>
=>
So the vertical component of this tension is mathematically represented a
Now at equilibrium the net horizontal force is zero which implies that
=>
substituting values
substituting values
