Planetary Motion
Describing Rotational Motion
Rotational Dynamics
Equilibrium
Interstellar
100

This "force" is the attractive property between two massive objects.

Gravity

100

This is the change in the angle (theta) as an object rotates.

Angular Displacement

100

This is the resistance to an object's ability to rotate represented by the letter I.

Moment of Inertia

100

An object in equilibrium has no net _____ and _____ .

force, torque

100

This is the name of Cooper's daughter who is named after a law of nature.

Murphy Cooper

200

This law states that an imaginary line from the Sun to a planet sweeps out equal areas in equal times.

Kepler's 2nd Law

200

This is the equation that describes angular acceleration.

The change in angular velocity with respect to the change in time.
200

This is the combination of a force and a lever arm that can cause an object to rotate.

Torque

200

This is the point on an object that moves in the same way that a point particle would move. It is said to be where the force of gravity acts on the object for purposes of calculation.

Center of Mass

200

This theorized physical object is known as an Einstein-Rosen bridge and allowed the astronauts of Interstellar to travel to a distant galaxy.

Wormhole

300

This law states that the square of the ratio of the period of any two planets is equal to the cube of the ratio of their distances from the Sun.

Kepler's 3rd Law

300

A toy rotates at a constant 5rev/min. Is its angular acceleration positive, negative, or zero?

Zero

300

This law states that angular acceleration is directly proportional to the net torque and inversely proportional to the moment of inertia.

Newton's 2nd Law for Rotation

300

This "force" seems to exist when an object is analyzed from a rotation frame of reference. It is necessary for calculating the motion of a rocket on our Earth as it travels North or South.

The Coriolis "Force"

300

This was the name of the blackhole in Interstellar.

Gargantua

400

Jupiter is 5.2 times further from the Sun than the Earth is. Find the length of Jupiter's orbital period in Earth years.

12 years

400

A steering wheel with a radius of 22cm is rotated through an angle of 128 degrees. How far would a point on the edge of the steering wheel move?

0.49m

400

What is the torque on a bolt produced by a 15N force exerted perpendicular to a wrench that is 25cm long?

3.8 N*m

400

A stunt driver maneuvers a monster truck so that it is traveling on only two wheels. Where is the center of mass of the truck?

It is directly above the line between where the two wheel are touching the ground. There is no net torque on the truck, so it is momentarily stable.

400

This is the name given to the edge of a blackhole where the gravitational pull becomes so strong that light cannot escape.

The Event Horizon

500

Two spheres are placed such that their centers are 2.6m apart. The gravitational force between the two spheres is 2.75 x 10^-12 N. What is the mass of each sphere if one of the spheres is twice the mass of the other sphere?

0.37kg, 0.75kg

500

A laboratory ultracentrifuge is designed to produce a centripetal acceleration of 0.35 x 10^6 at a distance of 2.50cm from the axis. What angular velocity in rev/min is required to achieve this?

1.1 x 10^5 rev/min

500

A bicycle wheel with a radius of 38cm is given an angular acceleration of 2.67 rad/s^2 by applying a force of 0.35N to the edge of the wheel. What is the wheel's moment of inertia?

0.050 kg*m^2

500

Two people are holding up the ends of a 4.25 kg wooden board that is 1.75m long. A 6.00kg box sits on the board, 0.50 m from one end. What forces do the two people exert?

62N and 38N upward

500

This is the physics concept that caused an hour on the planet orbiting close to the black hole to be equivalent to 7 years back on Earth.

Time Dilation