Question

A roller coaster of mass 500 kg starts its ride from rest at point A. Point A is located at a height of 70 m above the lowest point on the track. The car rolls down the incline and follows the track around a loop of radius 15 m. Ignore friction force.

How much work is required to bring the cat to point A?

Answer 1

Answer:

The work required to bring the cat to point A is 343 kJ.

Explanation:

Given that,

Mass of the roller coaster, m = 500 kg

Height from ground to point A, h = 70 m

The car rolls down the incline and follows the track around a loop of radius 15 m. We need to find the work required to bring the car to point A. the work done is equal to its potential energy such that :

W = mgh

$W=500\ kg\times 9.8\ m/s^2\times 70\ m\\\\W=343000\ J$

or

W = 343 kJ

So, the work required to bring the cat to point A is 343 kJ. Hence, this is the required solution.