Abicyclist 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

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

Where, m = mass

v = velocity

r = radius

Put the value into the formula

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

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

think its the third option