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As you move outward from the center of a wheel, the distance to go around it (circumference of the circle) becomes larger. Since the wheel is a solid object, the outside must complete the same number of revolutions per minute as the the inside, at the center or axle (360 degrees, 2pi radians). Since it has a much longer distance to travel, the outside must move at a higher speed.
The same principle applies to spheres (3 dimensional circles): because the Earth is a single object rotating around its axis, the surface at the equator is moving at more than 1000 mph to the east, while the poles spin in place without moving.
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If a compass spins twice around is the circumference doubled?
Yes! If It spins one time, then that is the circumference. Therefore if you spin it a second time, that doubles it!
How many kilo meters is the circumference of the earth?
Call it 40,000, you'll be near enough for Wiki... The metre is defined as one-forty-millionth of the polar circumference, it's a little higher at the equator because of the spin...
At how many revolutions per minute do the wheels of a bike typically spin?
The revolutions per minute of a bike wheel depends on the size of the wheel, the speed you are riding, and other factors. It is generally thought it can spin at 2 revolutions per second.
Do bigger planets spin faster than smaller ones?
The size of the planet doesn't have an effect on how fast a planet spins, therefore the speed to spin is random or has some other factor.
What is the probability of a spin land on blue in wheel had 4 colors equal part if you spin it 5 times?
Prob(at least one Blue if you spin it 5 times) = 1 - Prob(No Blue in 5 spins) = 1 - (3/4)5 = 1 - 243/1024 = 781/1024 = 0.7627 approx.
