Gravitational field - Jamb Physics Past Questions and Answers

Question 26:

• JAMB 2015

A structural engineer stood on a top of a building releasing a light and heavy object to the ground which of the following statement is true?(Neglect Air Resistance)

A. Bothe light and heavy subject reach the ground at the same time
B. He light object get to the ground first before the heavy object
C. He heavy object to the ground first before the light object
D. None get to the ground first

Question 27:

• JAMB 2015

The dimension of universal gravitational constant is..........?

A. \( M­^{–1}L^3 T^{–2} \)
B. ML³T²
C. ML³
D. MLT^-2

Question 28:

• JAMB 2016

A satellite moves in a circular orbit of radius 4R round the earth. The acceleration of the satellite in terms of g is

A. \(\frac{g}{16}\)
B. \(\frac{g}{4}\)
C. \(\frac{4}{g}\)
D. \(\frac{16}{g}\)

Question 29:

• JAMB 2016

A satellite revolving around the earth is kept on its orbit by

A. Centripetal forces only
B. Centripetal and frictional forces
C. Centrifugal forces only
D. Centripetal and centrifugal forces

Question 30:

• JAMB 2019

The earth's gravitational field intensity at its surface is about
(G = 6.7 à— 10\(^{-11}\)Nm\(^2\)/kg\(^2\), mass of the earth is 6 à— 10\(^{24}\)kg, radius of the earth is 6.4 à— 10\(^6\)m, g on the earth = 9.8m/s\(^2\))

A. 6.7N/kg
B. 7.9N/kg
C. 8.0N/kg
D. 9.8N/kg