Complete your homework and submit it to your instructor 1 Fi

Complete your homework and submit it to your instructor.

1. Find the angular displacement of 2.9 revolutions.

2. Find the angular displacement of 11.2 revolutions.

3. Find the angular velocity in radians/second of 4.2 revolutions in 2 minutes.

1) in one revolution angular displacement = 2*pi radian

in 2.9 revolution , angular displacement = 2.9*2*pi = 2.9*2*3.14 = 18.212 radian

2) angular displacement = 11.2*2*pi = 70.336 rad

3) angular velocity, w = angular displacement / time

w = 4.2*2*pi / 2*60 sec

= 0.2198 rad/sec

4) angular velocity, w = angular displaceement / time

time = angular displaceemen / w

= 2*2*pi / 8.9 = 1.41 sec

5) linear velocity , V = w*r

where w = angular velocity = 12.3 rad/s

r = radius = 5.9 cm

V = 12.3 * 5.9 *10^-2 = 0.725 m/s