When the pendulum bob reaches the mean position, the net force acting on it is zero. Why then does it swing past the mean positi
1 answer:
Answer:
<u>The pendulum bob swing past the mean position because:</u>
When a pendulum's bob is accelerating at its extreme position its velocity is zero. Due to the restoring toque the bob starts to accelerates towards its mean postion. The maximum acceleration of the pendulum's bob is and the the acceleration decreases as
towards the mean position.
The acceleration at the mean position becomes zero but the velocity remains maximum. Hence the bob continues to move and does not stops.Thus it can summarised as the force decreases ,acceleration decreases and velocity increases at slow rate.
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Answer:
The answer is 3.33m
Explanation:
The acceleration "a" is constant.
Acceleration is the variation of velocity over time,
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solving the last equation
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where because the airplane starts from rest.
Once again, velocity is the variation of distance over time.
then
where if we consider the end of the runway as the initial point (this step is for simplicity but you can let it expressed, it's going to cancel anyway).
If at
, then
and the final expression for the distance is
.
If t = 2s, x = 4.44 m. Which means thad the additional distance is