Gravitational Potential Energy Quiz

What happens to gravitational potential energy as an object gets closer to the Earth's surface?

• It becomes zero.

• It increases.

• It decreases.

• It remains constant.

Why is the gravitational field strength not constant everywhere on Earth?

• Because the Earth is a perfect sphere.

• Because the Earth is a spinning sphere and slightly flattened at the poles.

• Because the Earth is a cube.

• Because the Earth is stationary.

What happens to the velocity of an object dropped from a greater height compared to a smaller height?

• It remains the same.

• It decreases.

• It increases.

• It becomes zero.

What is the definition of gravitational potential energy in terms of work done?

• Work done in moving a mass from the center of the Earth to infinity.

• Work done in moving a mass from the surface to the center of the Earth.

• Work done in moving a mass from infinity to a point in the gravitational field.

• Work done in moving a mass from one point to another on the Earth's surface.

What is the formula for gravitational potential energy on a planetary scale?

• E = -GMM/R

• E = GM/R

• E = GMH

• E = MGH

Why is the MGH equation not suitable for planetary or galactic scales?

• Because it assumes G is constant at all heights.

• Because it assumes energy is constant.

• Because it assumes mass is constant.

• Because it assumes height is constant.

What does the variable 'G' represent in the formula for gravitational potential energy?

• The velocity of the object.

• The mass of the object.

• The gravitational constant.

• The distance to the center of the Earth.

In the formula -GMM/R, what does 'R' represent?

• The gravitational constant.

• The mass of the Earth.

• The distance to the center of the Earth.

• The radius of the Earth.

What is the significance of 'infinity' in the definition of gravitational potential energy?

• It is where the gravitational force is strongest.

• It is where the gravitational force is weakest.

• It represents the maximum potential energy.

• It is a reference point where potential energy is zero.

What is the gravitational constant value used in the formula for gravitational potential energy?

• 9.81 m/s²

• 1.62 m/s²

• 6.67 x 10^-11 N(m/kg)²

• 3.14