My question is why they use 2500 instead of 2800? iliup speed, commonly lel tumi
ID: 2913172 • Letter: M
Question
My question is why they use 2500 instead of 2800? iliup speed, commonly lel tuming at a constant speed is defined in a similar it is the measure of the angle traveled divided by the time taken to rotate through that angle. Example 5 shows how linear and angular speeds can be related. XAMPLE 5 The tachometer in a car registers 2800 rpm, which indicates that the engine is turning at the rate of 2800 revolutions per minute. When this particular car is in sixth gear, the rear wheels turn once for every 3.005 revolutions of the engine. The diameter of the rear wheels is 24.5 inches. At what speed is the car traveling? The angular speed of the engine is Solution revolutions E 2800 so the angular speed of the rear wheel is minute revolutions 931.8 minute 3.005 2500 2500931.8 minute 3.005 The diameter of the tire is 24.5 inches, so the circumference of the tire is 24.5? inches 76.969 inches = 6.414 feet. Hence a point on the outside of the tire, which is also the theoretical speed of the car, is feet feet feet revolution 5977-= 99.61 minute 6.414 931.8 revolutions sec minute Because 88 ft/sec is equivalent to 60 miles per hour, the speed of the car is approxi- mately 67.9 miles per hour.Explanation / Answer
By mistake, It has written 2500 but the calculations were done by using 2800. You can check
(2800/3.005) revolutions / minute is approximately 931.8 revolutions/ minute.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.