A bicyclist travels in a circle of radius 23.6 m at a constant speed of 7.19 m/s. The bicycle-rider mass is 79.0 kg. Calculate the magnitudes of (a) the force of friction on the bicycle from the road and (b) the net force on the bicycle from the road.

(a)

(b)

Explanation:

According to the free body diagram of the bicyclist, we have:

Here is the centripetal force, which is defined as:

(a) Replacing this in the sum of the force in the x-axis, we calculate the force of friction on the bicycle from the road:

(b) The forces on the bycicle from the road are the friction force and the normal force. This forces are perpendicular. So, the net force is:

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force