Dear
students of the kinematics and dynamics course, I was not able to upload the
file to the blogger last Friday, so you must deliver it next Tuesday.
Practice
- A
rifle is a long gun whose barrel has been grooved or "rifled" on
the inside with spiral channels. (For comparison, a long gun with a smooth
bore is called a musket.) Bullets fired from a rifled barrel spin. This
gives them greater stability in flight and thus greater accuracy when
fired. Since 1964, the standard infantry weapon in the US Army has been
the .22 caliber M16 rifle. Due to rifling, a bullet fired from an M16
rotates two and a half times on its journey from the breech to the muzzle.
Given a barrel length of 510 mm and a muzzle velocity of
950 m/s, determine…
a.
the average translational acceleration,
b.
the
average angular acceleration (in radians per second squared), and
c.
the
final angular velocity (in rotations per second)
Best regards, you
are having an excellent weekend
Best regards, you are having an excellent weekendBest regards, you are having an excellent weekendBest regards, you are having an excellent weekend
