The gravitational field at a point is defined as:
a) The force experienced by a unit mass at that point
b) The potential energy per unit mass at that point
c) The acceleration due to gravity at that point
d) The gravitational force acting on the object at that point
The gravitational potential energy at a point in a gravitational field depends on:
a) The mass of the object
b) The distance from the center of the Earth
c) The gravitational field strength
d) Both a and b
Gravitational potential is zero at:
a) The Earth’s surface
b) Infinity
c) The Earth’s center
d) The Moon’s surface
The gravitational field strength at a point is:
a) The force per unit charge
b) The force per unit mass
c) The potential energy per unit mass
d) The potential per unit mass
Gravitational field lines are:
a) Parallel and equally spaced
b) Always perpendicular to the surface of the Earth
c) Radial and point inward for a mass
d) Always curved
The unit of gravitational potential is:
a) Joules
b) Newtons
c) Joules per kilogram
d) Newton-meters
The gravitational potential energy of an object is negative when:
a) It is inside the Earth’s surface
b) It is above the Earth’s surface
c) It is infinitely far from the Earth
d) It is on the Earth’s surface
The gravitational field due to a point mass is:
a) Uniform in all directions
b) Radial and decreases with distance
c) Constant at all points
d) Zero at all distances
Gravitational potential energy is always:
a) Positive
b) Zero
c) Negative
d) Dependent on the mass of the object
In a uniform gravitational field, the gravitational potential energy of an object is:
a) The same at all points
b) Constant
c) Proportional to its height above a reference level
d) Inversely proportional to its mass
The gravitational field strength at the surface of the Earth is approximately:
a) 9.8 N/kg
b) 9.8 m/s²
c) 0 N/kg
d) 0 m/s²
The work done in moving an object in a gravitational field is equal to:
a) The change in the object’s velocity
b) The change in gravitational potential energy
c) The force times the distance
d) The change in kinetic energy
The gravitational potential at a point inside a uniform spherical mass is:
a) Zero
b) Constant
c) Inversely proportional to the square of the distance from the center
d) Directly proportional to the distance from the center
The gravitational potential at the surface of the Earth is:
a) Zero
b) Positive
c) Negative
d) Infinite
The gravitational potential energy of an object in orbit is:
a) Positive
b) Negative
c) Zero
d) Dependent on the object’s velocity
The gravitational potential of an object near the Earth’s surface is:
a) Independent of the mass of the object
b) Directly proportional to the mass of the object
c) Inversely proportional to the height of the object
d) Inversely proportional to the distance from the Earth’s center
The change in gravitational potential energy is equal to:
a) The force times the displacement
b) The product of mass and the change in velocity
c) The change in the object’s gravitational potential
d) The change in the object’s mass
At a distance of 2 Earth radii from the center of the Earth, the gravitational field strength is:
a) One-quarter of that on the Earth’s surface
b) Half of that on the Earth’s surface
c) Twice that on the Earth’s surface
d) Four times that on the Earth’s surface
The gravitational potential energy of an object increases when:
a) It moves closer to the Earth
b) It moves further away from the Earth
c) It loses velocity
d) Its mass increases
At a point where the gravitational field is uniform, the gravitational potential is:
a) Constant
b) Zero
c) Increasing with distance
d) Decreasing with distance
Gravitational field strength is measured in:
a) Joules per kilogram
b) Newtons per meter
c) Newtons per kilogram
d) Joules per meter
Gravitational potential is:
a) Scalar
b) Vector
c) A force
d) A type of energy
At a distance of 3 Earth radii from the center of the Earth, the gravitational potential is:
a) Three times that at the Earth’s surface
b) Negative and one-third of that at the Earth’s surface
c) Negative and one-ninth of that at the Earth’s surface
d) Zero
