A shell acquires the initial velocity v = 320 m/s, having made n = 2.0 turns inside the barrel whose length is equal to l = 2.0 m. Assuming that the shell moves inside the barrel with a uniform acceleration, find the angular velocity of its axial rotation at the moment when the shell escapes the barrel.
A wheel rotates with a constant angular acceleration of 2.0 rads2. If the wheel starts from rest, how many revolutions will it make in the first 10 seconds?
A fan is rotating with angular velocity 100 revsec. Then it is switched off. It takes 5 minutes to stop. (i) Find the total number of revolution made before it stops. (Assume uniform angular retardation) (ii)) Find the value of angular retardation (iii) Find the average angular velocity during this interval.
No. of revolutions = 15000
The wheel of a motor, accelerated uniformly from rest, rotates through 2.5 radian during the first second. Find the angle rotated during the next second.
- 5 rad
Two particle A and B move on a circle. Initially Particle A and B are diagonally opposite to each other. Particle A moves with angular velocity π radsec, angular acceleration π2radsec2 and particle B moves with constant angular velocity 2π radsec. Find the time after which both the particle A and B will collide.
- x = 2y
- y = 2x
- x = y
- None of these
- 600 rad
- 75 rad
- 300 rad
- 150 rad