The angular velocity of a pulley turning 1800 rpm is 60 pi radians per second.
The answer is: L = pi x (D + d)/2 + 2 x ( C x Cos(a) + a x (D-d)/2) where a = arcsin(D-d)/(2 x C) in radians. Where C is the center distance, D is the large pulley diameter, and d is the small pulley diameter.
a pulley that Archimedes made
No. A pulley is a simple machine in its own right.
a fixed pulley is a pulley attached to a support.
me
-- 80 rpm = 160 pi per minute = (160 pi / 60) = (8/3 pi) radians per second.-- Circumference = 2 pi R = 12 pi centimeters.Linear velocity = (circumference x RPM) or (radius x angular velocity).Let's use the second one, since we already calculated the angular velocity, and it's in seconds.Linear velocity = (radius) x (angular velocity) = (6 x 8/3 pi) = 16 pi = 50.27 cm/sec (rounded)
# We usually use belts to connect PULLEYS; Chains to connect SPROCKETS. Gears have teeth and usually directly mesh together without belts. However, there are gear-like pulleys that have teeth on them but require belts that also have teeth. Possibly what your thinking of... but the math problem is the same with or without a belt. # The key is to recognize the ratio between the pulleys (or sprockets or gears.) 1.2m / 0.4m = 3 ... so the ratio is 3:1 # If the smaller pulley (gear) is the drive, then the driven (bigger) one will turn 1/3 times for each turn of the small one, for a ratio of 3:1. If the big pulley (gear) is the drive, then the driven (smaller) one would turn 3 times for each single turn of the big one. # You did not state the time of rotation. (per second? per minute?) Regardless, the the big pulley (gear) will have 1/3 (one third) the angular velocity of the small pulley (gear.) So (ANSWER) your BIG pulley (or gear) will have angular velocity of 3.333333... (three and one third) radians per time unit.
The ratio for a simple pulley (not a pulley block), using an inelastic string, is 1.
the circumference ratio
the pulley on the harmonic balance drives the alternator belt. this is the pulley at the bottom of the engine ,on the front of the crank shaft if this pulley is not turning you have a problem. this means either the key is missing or the crankshaft is broken
to avoid the slip , increase the velocity ratio and increase belt and pulley life... thanku..:)
a gear or a pully
To find the velocity ratio of a pulley, you must first find the effort and load distances. then you divide the two and there you have you VR (velocity ratio).
if there isn't anything wrong with the belt the pulley is turning, check to see if the pulley is stuck, you might need to replace the pulley ( about $30 )
Use a pneumatic or electric impact wrench.
I assume you mean the idler pulley on the A/C belt. I have not replaced this particular item but it should be simple. Looking from the top of the engine compartment on the passenger side you will see the idler pulley with a mounting/locking bolt which attaches the pulley and the tension adjusting point immediately above it. Loosen the pulley locking bolt by turning counter clockwise. Relieve belt tension by turning the adjuster bolt counter clockwise. Remove the belt and pulley. Replace in the reverse order.
tension pulley is an automatic tensioner that keeps the serpentine belt at the proper tension it is a single pulley that is smooth (no grooves) usually turning clockwise with constant pressure loosens pulley for belt removal use caution pulley is spring loaded