Asked by ZAHEER ALI KHAN
"A DIAMETER OF THE WHEEL OF A CAR IS 84 CM AND THE SPEED OF A CAR IS 72KM/H. THE NO. OF REVOLUTIONS MADE BY THE WHEEL IN 11 MINUTES IS."IS THIS QUESTION EXAMPLE OF CIRCLE OR CYLINDER?
Answers
Answered by
ANON
The question is an example of uniform circular motion -> circle.
kph to mpm (meters per minute): 72kph -> 1200 m/min
cm to m: 84 cm -> 0.84m
circumference of the wheel = pi. diameter = 3.14 * 0.84m = 2.6376m
length of 1 revolution = circumference = 2.6376m
in 11 min: number of revolutions = 1200/2.6376 = 454.959m/min
kph to mpm (meters per minute): 72kph -> 1200 m/min
cm to m: 84 cm -> 0.84m
circumference of the wheel = pi. diameter = 3.14 * 0.84m = 2.6376m
length of 1 revolution = circumference = 2.6376m
in 11 min: number of revolutions = 1200/2.6376 = 454.959m/min
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