COMEDK 2022 | Gravitation Question 13 | Physics

The height at which the acceleration due to gravity becomes $$\frac{g}{16}$$ (where, g = acceleration due to gravity on the surface of the earth) in terms of R is, if R is the radius of earth.

$$2R$$

$$3R$$

$$\sqrt2R$$

$$\sqrt3R$$

COMEDK 2022

MCQ (Single Correct Answer)

-0

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

$$-1$$

$$-2$$

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

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

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