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a roller coaster car filled with passengers has a mass of 4.80 kg. what speed must it have at the top of the 7.5 m tall circular loop so the car doesn't fall off?

1 year ago

Answered By Harsh P

Centripetal force = gravitation at the top. 

The radius of the loop is 7.5 /2 = 3.75 m 

(m.v2)/r = m.g

v2= r. g  = 3.75 X 9.81

So, v = 6.06 m/s