Because the speedometer responds directly and proportionally to acceleration (whether speeding up or breaking). If the speedometer displayed average speed it would not be directly affected by changes in speed due to acceleration
Work done = 1/2*(max. force - min. force) * greatest extenstion
Max. force = spring constant * greatest extension= 80*d = 80d N
Min. force = spring constant * smallest extenstion = 80*0 = 0 N
Therefore,
Work done = 1/2*80d*d = 40d^2 J
However,
Mechanical energy = Work done
That is,
0.12 = 40d^2
d = Sqrt (0.12/40) = 0.0548 m
The greatest extension from its equilibrium is 0.0548 m.
Answer:
Explanation:
As we know
so we will have
now angular frequency is given as
Now the inwards is given as centripetal force