The casing of a rocket in flight burns up due to friction. At whose expense is the heat energy required for burning obtained? The rocket or the atmosphere?

Asked by Abhisek | 1 year ago |  71

##### Solution :-

When the casing burns up due to the friction, the rocket’s mass gets reduced.

As per the law of conservation of energy:

Total energy = kinetic energy + potential energy

$$mgh + \dfrac{1}{2}mv^2$$

There will be a drop in total energy due to the reduction in the mass of the rocket. Hence, the energy which is needed for the burning of the casing is obtained from the rocket.

Answered by Pragya Singh | 1 year ago

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