Agear spins at 1880 rev/min. what is the angular displacement of the gear in 2.50s? a. 49.2 rad c. 26 rad b. 626 rad d. 492 rad

The angular displacement of the gear in 2.50s is 492 rad.

Explanation:  

Given the speed of the gear = 1880 rev/min.

Angular displacement =?

So to calculate gear's angular displacement in 2.5 seconds,  

we have to convert rev/min to radians/sec.  

Conversion of 1880 rev/min to radians/sec:  

This is

So the gear will travel 196.9 radians in 1 second.  

Now, multiply this by 2.5, and we get 492.2 radians.

e/c, where e is its total energy

the answer is 12 as i may remember

: )