Question

A bicyclist of mass 85 kg rides in a circle at a speed of 4.5 m/s. If the radius of the circle is 8 m, what is the centripetal force on the bicyclists

Answer 1

Answer:

The centripetal force on the bicyclists is 215.2 N.

Explanation:

Given that,

Mass of bicyclist = 85 kg

Speed = 4.5 m/s

Radius = 8 m

We need to calculate the centripetal force

Using formula of centripetal force

$F_{ac}=\dfrac{mv^2}{r}$

Where, m = mass

v = velocity

r = radius

Put the value into the formula

$F_{ac}=\dfrac{85\times4.5^2}{8}$

$F_{ac}=215.2\ N$

Hence, The centripetal force on the bicyclists is 215.2 N.

Answer 2

F=m*(v^2/r)
F=85*(4.5^2/8)
F=215.2N