Can there be a situation where it is necessary to increase air resistance on a falling object? How is it done?

Open in App

Solution

Increasing the air resistance can be very desirable if you want the object to fall, and hit the ground, slower. The most obvious case is when parachuting. A falling object has to push the air out of the way. It is much easier for the air to push past a small object than a large one. Parachutes slow you down because they present a large surface area, making it harder for the air to get out of the way.

Suggest Corrections

Similar questions

Q. How much work should be done on a car of mass 1000 kg to increase its speed from 10 m/s to 20 m/s (Ignore air resistance and friction).

Q. Give two situations where it is necessary to separate a mixture into its constituents.

Define energy. Mention two types of energy. How much work should be done on a bicycle of mass 20 kg to increase its speed from $2 m s^{- 1}$ to $5 m s^{- 1}$ ? (Ignore air resistance and friction).
[5 MARKS]

due to increase in temperature the resistance of a conductor increases due to increased number of conduction electrons but if there will be more charges there will be more current and current is inversely proportional to resistance then how it increases the resistance of the conductor?

Q. Give four situations each where friction is necessary and where it is not necessary.

Join BYJU'S Learning Program