Gravitational Force - Study Mode

[#86] Why is weightlessness experienced while orbiting the earth in space ships?
Correct Answer

(D) Orbital motion

[#87] The laws which govern the motion of planets are called
Correct Answer

(B) Kepler's laws

[#88] Who was the first to experimentally determine the value of the Universal Gravitational Constant (G)?
Correct Answer

(A) Henry Cavendish

[#89] Which of the following statements is/are false? 1. The value of G is the same as its value on the moon, on Earth. 2. The gravitational force between the centers of two masses of 2 kg placed at a distance of 1m is 26.68 × 10 -11 Nm 2 /kg 2 . 3. The force is inversely proportional to the square of the distance between the two objects. 4. The force of gravity between two objects doubles when the distance between them is halved.
Correct Answer

(C) Only 4

[#90] Who propounded the universal law of gravitation?
Correct Answer

(A) Newton