Oh... the Greeks
Soup cans, wrenches and open doors
What kids wish they knew on playgrounds
Words and formulas
From rads to degs
100
This is how you convert from linear acceleration to angular acceleration.
What is alpha= a/r ?
100
Distribution of mass affects an object's __________ .
What is moment of inertia?
100
The center of mass is located here to make an object stable.
What is above its base?
100
This is Newton's Second Law for rotational motion without knowing torque.
What is alpha= (Frsin0)/ I ?
100
Opposing a clock, radians are measured this way.
What is counterclockwise?
200
The change in angle as the hour hand on a clock goes from one to two o'clock.
What is pi / 6 rads?
200
This is what happens when torque is exerted on an object.
What is angular velocity changes?
200
This is how a ball looks above a merry-go-round if tossed from a person at the center to a kid sitting on the edge.
What is a straight line?
200
This is the Latin meaning of "centrifugal".
What is center-fleeing?
200
This is 1/6 of a revolution in radians.
What is pi/ 3 radians?
300
The amount of time that passes if the second hand has an angular displacement of 24*pi.
What is 12 minutes?
300
This is the torque needed to keep the wheel from turning if the bike chain wheel has a radius of 7.70 cm and the chain exerts a 35.0N force on the wheel.
What is 2.7 Nm?
300
In order for a ballerina to leap in the air, he/she must to this to change his/her center of mass.
What is raise his/her arms above her center of mass?
300
This is one condition for equilibrium.
What is net torque=0 OR net force=0?
300
This is 5 revolutions, in degrees.
What is 1800 degrees?
400
This is the angular acceleration of a merry-go-round that starts at rest and accelerates to 4 rad/sec in 1.5 seconds.
What is 2.6 rad/ s/s?
400
This is how you find an object's distance from the axis of rotation (radius) if you know moment of inertia and the object's mass.
What is take the square root of I/m?
400
This effect explains why changing your frame of reference affects how you observe rotational motion.
What is the Coriolis "force"?
400
This is an object's distance from the axis of rotation in rotational motion.
What is radius?
400
This is 225 degrees in radians.
What is 5*pi/ 4 radians?
500
This is the diameter of a truck's wheel if a truck has a linear acceleration fo 1.85 m/s/s and the wheels have an angular acceleration of 5.23 rad/s/s.
What is 0.707 meters?
500
This is the length of the lever arm if you need to tighten a bolt with a torque of 35 Nm and your wrench is 25 cm long and you pull on the wrench at an agnle of 60 degrees.
What is L=0.22 m?
500
This explains why cars aren't stable against roll overs.
What is their center of mass is below their base?
500
This is the Greek letter that represents torque.
What is tau?
500
One radian is this fraction of a revolution.
What is 1/(2*pi) of a revolution?
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