SOLUTION: A steel bar 6.50 inches in diameter is being turned in a lathe. The surface speed of the bar is 55.0 feet per minute. How many revolutions will the bar make in 10.0 seconds?

Question 811809: A steel bar 6.50 inches in diameter is being turned in a lathe. The surface speed of the bar is 55.0 feet per minute. How many revolutions will the bar make in 10.0 seconds?

Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
C = 2 pi R
C = 2 * 3.1415 * 3.25 in * (1/12 ft/in) = 1.7016 ft
---
revs per minute (rpm):
55 ft/min * (1/1.7016) rev/ft = 32.321 rpm
---
revs per second (rps):
32.321 rev/min * (1/60) min/sec = 0.539 rps
---
revs per 10 seconds:
0.539 rev/sec * 10 sec = 5.39 revs
---
Solve and graph linear equations:
https://sooeet.com/math/linear-equation-solver.php
---
Solve quadratic equations, quadratic formula:
https://sooeet.com/math/quadratic-formula-solver.php
---
Convert fractions, decimals, and percents:
https://sooeet.com/math/fraction-decimal-percent.php
---
Calculate and graph the linear regression of any data set:
https://sooeet.com/math/linear-regression.php
RELATED QUESTIONS
A steel bar 6.50 inches in diameter is being turned in a lathe. The surface speed of the... (answered by TimothyLamb)

A steel bar with a radius of 6 inches is being ground in a lathe. The surface speed of... (answered by ikleyn)

A steel bar 6.70 in. in diameter is being ground in a lathe. The surface speed of the bar (answered by josgarithmetic)

A steel bar 6.80 in. in diameter is being ground in a lathe. The surface speed of the bar (answered by ikleyn)

A steel bar 6.30 in. in diameter is being ground in a lathe. The surface speed of the bar (answered by Alan3354)

A steel bar 6.50 in. in diameter is being ground in a lathe. The surface speed of the... (answered by Alan3354)

a piece of cast iron 6 inches in diameter is to be turned in a lathe with a cutting speed (answered by ankor@dixie-net.com)

A square steel bar is equal in area to a 5" diameter steel rod. Determine side of the... (answered by Alan3354,josmiceli)

A hexagonal steel bar is 1" in diameter across the flats, and 1' in length. Determine... (answered by ikleyn)