An 80 kg cart goes around the inside of a vertical loop of a roller coaster. the radius of the loop is 5m and the cart moves at a speed of 8m/s at the top. what was the force exerted by the track on the cart at the top of the loop?

F=  224 N

Explanation:

Given that

mass ,m = 80 kg

Radius ,r= 5 m

speed at the top v= 8 m/s

The force at the top = F

Now by using the Second law of Newton's

Now by putting the values

Take  g = 10 m/s²

F=  224 N

Therefore the force exerted by the track at the top position will be 224 N.