Home › Tamil Nadu SSLC (Class 10) › Physics › Laws of Motion › Since g = GM / R², the value of acceleration due…
Since g = GM / R², the value of acceleration due to gravity on the Earth's surface depends on the Earth's radius as
ADirectly proportional to R²
BDirectly proportional to R
CInversely proportional to R²
DIndependent of the radius R
Answer & Solution
Correct answer: C. Inversely proportional to R²
1. From g = GM / R², R appears in the denominator as R².
2. With G and M fixed, g is inversely proportional to R².
3. Rule out option B: a larger radius gives a smaller g, not a larger one.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 1 "Laws of Motion", p.17_
Related questions
A constant force of 6 N acts for 4 s on a 2 kg body initially at rest. The kinetic energy A stone of mass 0.5 kg is whirled in a horizontal circle of radius 1 m at constant angularA car of mass 1000 kg accelerates from rest to 20 m s⁻¹ in 5 s on a level road. The net hoA man weighing 50 kg jumps off a stationary boat of mass 250 kg into water with a horizontNewton's third law states that 'action and reaction are equal and opposite'. The most accuTwo identical billiard balls strike a smooth rigid wall with equal speeds u. Ball A strikeA force F acts on a particle making an angle θ with its instantaneous velocity. The componA cricketer draws his hands back while catching a fast ball. The physical reason is that: