Abicyclist of mass 112 kg rides in a circle at a speed of 8.9 m/s. if the radius of the circle is 15.5 m, what is the centripetal force on the bicyclist?

Hello!

A bicyclist of mass 112 kg rides in a circle at a speed of 8.9 m/s. If the radius of the circle is 15.5 m, what is the centripetal force on the bicyclist ?

We have the following data:

Centripetal Force = ? (Newton)

m (mass) = 112 Kg

s (speed) = 8.9 m/s

R (radius) = 15.5 m  

Formula:

Solving:

The centripetal force on the bicyclist is approximately 572.36 N

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i just did this and got a 100.

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.