Gravitational field - Jamb Physics Past Questions and Answers

Question 21:

• JAMB 2013

When a brick is taken from the earth's surface to the moon, its mass

A. Remains constant
B. Reduces
C. Increases
D. Becomes zero

Question 22:

• JAMB 2014

Calculate the escape velocity of a satellite launched from the earth's surface if the radius of the earth is 6.4x10⁶m

A. 25.3kms^-1
B. 4.2kms^-1
C. 4.0kms^-1
D. 11.3kms^-1

Question 23:

• JAMB 2014

An object of weight 80kg on earth is taken to a planet where acceleration due to gravity is one-third of its value on earth. The weight of the object on the planet is

A. 48N
B. 12N
C. 27N
D. 36N

Question 24:

• JAMB 2015

Calculate the gravitation force of attraction between two planets of 10²⁴kg and 10²⁷kg separated by a distance of 10²⁰meters.

A. 6.67N
B. 6.56N
C. 7.5N
D. 8.6N

Question 25:

• JAMB 2015

A member of the crew of a SPACESHIP experiences weightlessness in a space when they

A. Fall freely from the earth’s gravitational field
B. Is walking on the planet
C. In between the sun and the earth
D. Holding anything in space is negative