COMEDK 2022 | Gravitation Question 14 | Physics

The escape velocity of a projectile on the earth's surface is 11.2 km/s. A body is projected out with thrice this speed. The speed of the body far away from the earth will be

22.4 km/s

31.7 km/s

33.6 km/s

None of these

COMEDK 2021

MCQ (Single Correct Answer)

-0

Kepler's second law of planetary motion corresponds to

conservation of energy

conservation of angular momentum

conservation of linear momentum

conservation of mass

COMEDK 2021

MCQ (Single Correct Answer)

-0

A constant potential energy of a satellite is given as

$$\mathrm{PE}=r(\mathrm{KE})$$

whee, PE = potential energy

and KE = kinetic energy.

The value of $$r$$ will be

$$-1$$

$$-2$$

$$\frac{-1}{2}$$

$$\frac{-3}{2}$$

COMEDK 2020

MCQ (Single Correct Answer)

-0

A satellite can be in a geostationary orbit around a planet if it is at a distance R from the centre of the planet. If the planet starts rotating about its axis with double the angular velocity, then to make the satellite geostationary, its orbital radius should be

$$2R$$

$$\frac{R}{2}$$

$$\frac{R}{2^{1/3}}$$

$$\frac{R}{4^{1/3}}$$

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