Ashopper at the fries’ market place pushes a 13.0-kg shopping cart at a constant velocity for a distance of 58.7 m on a level surface. he pushes in a direction 24.50 below the horizontal. a 53.8 n frictional force opposes the motion of the cart. (a) what is the magnitude of the force that the shopper exerts on the cart? (b) what is the work done by the pushing force? (c) what is the work done by the frictional force? (d) what is the work done by the gravitational force?

We do a force summatory, then,

a)

(b) For the Work we need the equiation with the variable in X.

(c) However the Frictional Force Work,

(d) Now the work by gravity

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