Gravitational Forces

The strength of the gravitational force between two objects depends on

• Mass and Matter

• Mass and Weight

• Mass and Distance

• Mass and Strength

An object with more mass will exert greater gravitational force than an object with lesser mass.

• True

• False

As the distance between two objects increases, the force of gravity between them decreases.

• True

• False

Mass and weight are the same thing.

• True

• False

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

• more
• same
• dosen't matter
• less

The amount of attraction between two objects which are not in contact with each other is known as the _________.

• Normal force

• Gravitational force

• Magnetic force

• Electrical force

What is the proper setup of the gravitational force formula?

• F_g= Gm²/r

• F=ma

• F_g= Gr²/(m₁+m₂)

• F_g= G (m₁m₂)/r²

Calculate the gravitational force between a 15-kg chinchilla and a 65-kg dog which are separated by 0.30 m.

• F_g = 3.7*10^-8 N

• F_g = 1.3*10¹² N

• F_g = 1.1*10⁵ N

• F_g = 7.2*10^-7 N

What would the gravitational force be between the Sun and Mars if they were 2.3*10¹¹ m apart? The masses for the Sun and Jupiter are 1.99*10³⁰ kg and 6.42*10²³kg, respectively.

• F_g = 3.8*10¹⁵ N

• F_g = 2.8*10^-42 N

• F_g = 1.6*10²¹ N

• F_g = 4.6*10^-75 N

What does the variable G in the gravitational force equation represent? $F_g\ =\ G\ \frac{m_1\ m_2}{r^2}$  

• Universal gravitational constant

• Combined masses of the two objects

• Gravitational force

• Dielectric constant