Find an expression for the normal force n acting on the car when it is at the top of the arc. (use any variable or symbol stated above along with the following as necessary: m and g.)

Explanation:

As we know that when an object moves in a circle with uniform speed then the force required by the object in moving the circular path is known as centripetal force.

This force is always towards the center of the circle and points towards it

This force is the sum of all forces towards the center

so we have

so we have

explanation:

a fuel engine ( known as a gasoline engine in american english )is an internal combustion engine with spark ignition, designed to run on petrol (gasoline) and similar volatile fuels.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west