A 100 kg cart goes around the inside of a vertical loop of a roller coaster. The radius of the loop is 3 m and the cart moves at a speed of 6 m/s at the top. The force exerted by the track on the cart at the top of the loop is .

The centripetal force acting on the object is 1200N

Explanation:

Given-

mass, m = 100kg

radius, r = 3m

Velocity, v = 6m/s

Force, F = ?

When an object moves in a circular motion, then centripetal force acts on it.

We know,

Centripetal force, Fc = mv²/r

                             Fc =

                             Fc = 1200N

Therefore, the centripetal force acting on the object is 1200N

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

c) up

hope this