Gravitational Force - Practice Test

[#76] The free fall acceleration g increases as one proceeds at sea level, from the equator towards either pole. The reason is

(A) earth is a sphere with same density everywhere

(B) earth is a sphere with different density at the polar regions than in the equatorial regions

(C) earth is approximately an ellipsoid having its equatorial radius greater than its polar radius by 21 km

(D) earth is approximately an ellipsoid having its equatorial radius smaller than its polar radius by 21 km

Correct Answer

(C) earth is approximately an ellipsoid having its equatorial radius greater than its polar radius by 21 km

[#77] The SI unit of universal gravitation constant (G) is

(A) Nm 2 kg 2

(B) Nm 2 kg -2

(C) Nm -2 kg -2

(D) Nm -2 kg 2

Correct Answer

(B) Nm 2 kg -2

[#78] The weight of an object is maximum:

(A) at the poles

(B) equator

(C) on the tropics

(D) on the sub tropics

Correct Answer

(A) at the poles

[#79] Which one of the following statement is correct?

(A) The measurement of mass taken by a spring weighing balance is correct at the place where the spring balance is calibrated for

(B) The measurement of mass taken by a spring weighing balance is correct at all places

(C) The measurement of mass taken by a spring weighing balance is correct at the places where the acceleration due to gravity is same with the place where the spring balance is calibrated for

(D) A spring balance cannot be used to measure mass at any place

Correct Answer

(D) A spring balance cannot be used to measure mass at any place

[#80] In planetary motion, the angular momentum conservation leads to the law of

(A) orbits

(B) areas

(C) periods

(D) Conservation of kinetic energy

Correct Answer

(B) areas

Gravitational Force - Study Mode

[#76] The free fall acceleration g increases as one proceeds at sea level, from the equator towards either pole. The reason is

Correct Answer

[#77] The SI unit of universal gravitation constant (G) is

Correct Answer

[#78] The weight of an object is maximum:

Correct Answer

[#79] Which one of the following statement is correct?

Correct Answer

[#80] In planetary motion, the angular momentum conservation leads to the law of

Correct Answer