36HW_Phys: Quiz Review - Gravitation, Circular Motion, & Kepler

In what direction are centripetal forces generated?

• Tangent to the spinning object's motion

• Perpendicular to the spinning object's motion

• Toward the center of the circular rotation

• Away from the center of the circular rotaion

For a fixed radius, an increase in a spinning objects mass will cause the centripetal acceleration to ...

• stay the same, mass has no affect on the acceleration

• increase, mass increases the centripetal force

• decrease, mass decreases the centripetal force

• stay the same, mass decreases the centripetal force

What are the units of the Universal Gravitational constant?

• N⋅m²⋅kg²

• N⋅m²/kg²

• N⋅kg²⋅m²

• N⋅kg²/m²

The gravitational force between the Sun and the Earth is large because...

• The product of the mass of the Sun and the Earth is larger than the squared distance between them

• The distance between the Sun and the Earth is not very large

• The product of the Earth and the Moon's mass is very large

• The product of the distance between the Sun and the Earth and the mass of the Sun is large

Which of the following are Laws of Planetary motion developed by Kepler?

• The gravity between planets is dependent on their masses and the distance between them

• Planets move in circular orbits

• Planets move in elliptical orbits

• The area between the object and the object it is revolving around will be equal regardless of the tangential speed of the revolving object

• The ratio of the period cubed over the radius squared of a revolving object is equal to other objects revolving around the same body.