18 Questions
What would happen if there were no gravity?
Objects would float away into space
What would happen if the value of the gravitational constant, G, was twice as large?
The acceleration due to gravity, g, would be four times as large
If the mass of the Earth was twice as large and its radius was half of what it is now, what would be the value of the acceleration due to gravity, g, on the surface of the Earth?
Four times the current value of g
What is the unit of the acceleration due to gravity, g, in the SI system?
m/s^2
Which of the following statements is true about the acceleration due to gravity, g?
g is constant for all objects on the Earth's surface
What is the value of the acceleration due to gravity, g, on the surface of the Earth?
$9.77 \text{m/s}^2$
What does weight measure according to Newton's first law?
Gravitational force acting on an object
Which statement is true about weight and mass?
Weight changes from place to place, but mass remains constant.
When we say 'Rajeev's weight is 75 kg', what are we actually referring to?
Rajeev's mass
What is the SI unit of weight?
Newton
If your distance from the center of the earth is 2R, what will happen to your weight?
It will increase
What does a weighing machine actually measure?
Mass
What is the relationship between the mass of an object and the gravitational force acting on it, according to the universal law of gravitation?
The gravitational force is directly proportional to the mass of the object.
What is the relationship between the distance between two objects and the gravitational force acting between them, according to the universal law of gravitation?
The gravitational force is inversely proportional to the square of the distance between the objects.
What is the unit of the universal gravitational constant, $G$, in the SI system?
N$ullet$m$^2$/kg$^2$
What is the direction of the gravitational force between two spherical objects with uniform density?
The force is always directed along the line joining the centers of the two objects.
Where is the center of mass of a spherical object with uniform density located?
At the geometric center of the object.
What is the relationship between the gravitational force and the acceleration due to gravity, $g$, experienced by an object near the Earth's surface?
The gravitational force is directly proportional to $g$.
Test your knowledge on the gravitational force between two objects, including the impact of mass and distance according to the Universal gravitational constant. Understand how changes in mass and distance affect the gravitational force between objects.
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