This page requires a JavaScript-enabled browser
Instructions on how to enable your browser are contained in the help file.
physics-9-chapter-4-turning-effect-of-force-5
1.
The acceleration due to gravity on the surface of moon is 1.62 ms
-2
. The radius of moon is 1740 km. Find the mass of moon?
a) 7.35 x 10
22
Kg
b) 7.35 x 10
20
Kg
c) 7.35 x 10
21
Kg
d) 7.35 x 10
19
Kg
2.
Which of the following will be equal in the action and reaction due to force of gravitation?
a) Magnitude of force
b) Direction of force
c) Both magnitude and direction of force
d) Neither magnitude nor direction of force
3.
Calculate the value of g at a height of 3600 km above the surface of the Earth?
a) 4.0 ms
-2
b) 40 ms
-2
c) 0.4 ms
-2
d) 0.40 ms
-2
4.
Which of the following will be different in the action and reaction due to force of gravitation?
a) Direction of force
b) Magnitude of force
c) Both magnitude and direction of force
d) Neither magnitude nor direction of force
5.
With which law, the Newton’s law of gravitation is in consistent?
a) Newton’s third law of motion
b) Newton’s second law of motion
c) Newton’s first law of motion
d) Einstein’s mass-energy equation
6.
Which of the following law is in consistent with Newton’s third law of motion?
a) Newton’s law of gravitation
b) Law of inertia
c) Newton’s second law of motion
d) Einstein’s mass-energy equation
7.
Which of the following law states that to every action there is always an equal but opposite reaction?
a) Newton’s third law of motion
b) Newton’s second law of motion
c) Newton’s first law of motion
d) Newton’s law of gravitation
8.
Two lead spheres each of mass 1000 kg are kept with their centres 1 m apart. Find the gravitational force with which they attract each other?
a) 6.673 x 10
-5
Nm
2
Kg
-2
b) 1.000 x 10
-6
Nm
2
Kg
-2
c) 3.006 x 10
-89
Nm
2
Kg
-2
d) 7.036 x 10
-12
Nm
2
Kg
-2
9.
What is the formula of the gravitational force between a body of mass m and the Earth?
a) F = [G (m x M
e
)] / r
2
b) F = [G (m - M
e
)] / r
2
c) F = [G (m x M
e
)] + r
2
d) F = [G (m - M
e
)] + r
2
10.
What is ‘M
e
’ in the formula: F = [G (m x M
e
)] / r
2
?
a) ass of the Earth
b) Mass of the object
c) Gravitational constant
d) Radius of earth
This is more feedback!
This is the feedback!
