WorksheetsQuiz: Gravitational Field
Total questions: 15
Worksheet time: 10mins
Two isolated masses m1 and m2 are separated by a distance r. Which expression gives the gravitational field strength caused by m1 at m2?
G m1m2 / r
G m1 m2 / r2
G m1 / r2
G m2 / r2
What is numerically equal to the gravitational field strength at a point P on the Earth's surface?
the acceleration of free fall at P.
the change in potential energy per unit distance from P.
the force acting on any body placed at P.
the work done in bringing unit mass from infinity to P.
The gravitational potential energy is zero at
just above the surface
the surface
infinity
just before infinity
Which equation shows the gravitational potential, V?
V = − r2G M
V = − rG M
V = r2G M
V = rG M
Gravitational potential energy, 𝑈 stored in a test mass 𝑚 placed at a distance 𝑟 from the center of planet 𝑀 is defined as the ____________ by gravitational force in bringing a test mass from infinity to that point.
energy
power
velocity
work done
What is gravity?
A type of energy that objects emit
The natural tendency for things to move towards massive objects
A force that repels objects away from each other
The speed at which objects fall to the ground
Does the Moon have its own gravity?
No, gravity only exists on Earth
Yes, but only during a full moon
Yes, because it has mass
No, because it orbits the Earth
What would happen to the gravitational force between two objects if one of their masses doubled?
The gravitational force would double
The gravitational force would halve
The gravitational force would remain unchanged
The gravitational force would quadruple
Suppose a body of large mass is close to a body of small mass. Which statement correctly describes the force due to gravity in this system?
The small body alone experiences a force.
Both bodies experience a force of equal magnitude.
Each body experiences a different force in proportion to its mass.
Each body experiences a different force in proportion to the square of its radius.
What is meant by a quantity having an inverse-square relationship with distance?
The quantity is proportional to the reciprocal of the square of a distance.
The quantity is not proportional to the square of the distance.
The quantity is proportional to the reciprocal of the square root of a distance.
The square of the quantity is proportional to the reciprocal of a distance.
