- #1

- 3

- 0

I confused about something,please help me.

I have a bullet and its diameter is 0.5 inches. its speed is 400 foot /sec.

It makes one complete rotation in the gun 120 mm per turn and length of the gun is 1.5 meter.

How can I calculate the rotational and angular speed?

-I used a formula for rotational speed;

R=2pi.n n=(number of the rotation) which is 1.5 meter/1.2 mm.

- Angular speed;

w=v/r w=400 ftsec/0.5inch

Are my formulas and calculations correct?