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4 years ago

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2. A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. A passenger feels the seat

of the car pushing upward on her with a force equal to five times her weight as she goes through the dip. Of r = 21.5 m, how fast is the roller coaster traveling at the bottom of the dip?

1 answer:

vekshin14 years ago

6 0

Answer: $v=\sqrt{4gr}$

Explanation:

Given

Passenger feels the seat of the car Pushing upward with a force equal to five times her weight

Therefore

$N-mg=\frac{mv^2}{r}$

it is given $N=5mg$

where N=normal reaction

$5mg-mg=\frac{mv^2}{r}$

thus $v=\sqrt{4gr}$

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Pressure is defined as the force per unit area on a body.

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Answer:

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force between two charges is given as

$F = 0.66 N$

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Explanation:

1)

The period of a wave is the time it takes for the wave to do one complete oscillation.

The period of a wave is the reciprocal of the frequency of the wave:

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In the third medium,

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3)

When a wave travels from a medium into another, the following things happen:

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