(b) The cabin and passengers have a total mass of 800 kg. The vertical distance between B and C is 50 m.
Calculate the increase of gravitational potential energy of the cabin and passengers when they
move from B to C.
energy =

392 kJ

Explanation:

Given that,

The total mass of the cabin and the passengers = 800 kg

The vertical distance between  B and C is 50 m.

We need to find the increase of gravitational potential energy of the cabin and passengers when they  move from B to C. It can be given by the relation as follows :

So, the increase in gravitational potential energy is 392 kJ.

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