Circular Motion
This is the term for circular motion around an external axis.
What is revolving.
Linear motion is caused by force, in the same way that rotational motion is caused by ________
What is torque.
This is the tendency of an object to resist a change in its rotational speed.
What is rotational inertia.
This city is nicknamed the 'Windy City' in the US.
What is Chicago?
(18 ÷3 +28 ÷4 +2 x 4)÷3
What is 7?
This is the term for a line which touches a circle at only one point, and makes a 90 degree angle with the radius at that point.
What is a tangent line.
This is the average position of all the material making up an object is called the center of ________.
What is the center of mass or gravity.
A figure skater can speed up or slow down during a spin by adjusting their _________ of ________.
What is moment of inertia.
This is the crab's name in the movie 'Little Mermaid'.
Who is Sebastian?
This is the state that is home to the Mall of America
What is Minnesota?
This is the term for forces which point towards the center of a circle.
What are centripetal forces.
Math Question: A boy with mass of 80 kg sits on a see-saw 1.25 meters from the fulcrum. Where should his 50 kg brother sit in order to balance him out?
2m from the fulcrum, on the other side.
A figure skater can adjust their speed up or down, but this quantity is conserved, and so remains constant.
What is angular momentum.
This American Vice President became president when Nixon resigned
Who is Gerald Ford?
What chess piece can move in an L-shape?
What is the knight?
What provides the centripetal force for a car driving around a circular race track?
What is friction.
A force of 17 N is applied to the end of a 0.63-m long torque wrench at an angle 45° from a line joining the pivot point to the handle. What is the magnitude of the torque about the pivot point produced by this force?
What is 7.6 N.m?
Math Question: Which has more rotational inertia: a.) A solid metal sphere with mass 5 kg and radius 10 cm, rotating on its axis. or b.) A solid metal sphere with mass 10 kg and radius 10 cm, rotating on its long axis.
B
The capital of Hawaii is called this.
What is Honolulu?
The two U.S. presidents for which we celebrate birthdays for in February.
Who are George Washington and Abraham Lincoln?
What is the speed of an object moving in a UCM with an acceleration of 10 m/s2 at a distance of 0.75 meters from the center?
What is 2.74 m/s
A 95-N force exerted at the end of a 0.32-m long torque wrench produces a torque of 15 N ∙ m. What is the angle (less than 90°) between the wrench handle and the direction of the applied force?
What is 30o?
A figure skater rotating at 5.00 rad/s with arms extended has a moment of inertia of 2.25 kg ∙ m2. If he pulls in his arms so his moment of inertia decreases to 1.80 kg ∙ m2, what will be his new angular speed?
What is 6.25 rad/s?
This famous mountain has the faces of four past presidents carved on it.
What is Mt. Rushmore?
This holiday is celebrated on the first Monday in September.
What is Labor Day?