PHYSICS CHAPTER 5 SECTION 2 Worksheet 1

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PHYSICS CHAPTER 5 SECTION 2 Worksheet 1. Name ... A net force of 10 Newton's is applied tangentially to the rim of a wheel having a .25 meter radius.
PHYSICS CHAPTER 5 SECTION 2 Worksheet 1 Name

1. 2.

3.

Block What is the angular velocity in radians per second of a flywheel that spins 4820 revolutions per minute? (Answer 504.8 rad/s) 3 If a wheel spins 625 rad/s, what is its angular velocity in revolutions per minute? (Answer 5.97 X 10 rev/min)

A net force of 10 Newton's is applied tangentially to the rim of a wheel having a .25 meter radius. If the rotational inertia of 2 the wheel is .5 kgm2/rad, what is its angular acceleration? (Answer 5 rad/s ) F = 10 N

r = .25 m

4.

Calculate the rotational inertia of a thin ring whose mass is 5.7 kg and whose radius is .15 meters that rotates about an axis through the center perpendicular to the plane of the ring. (Answer .128 kgm2/rad)

r = .1 5 m

m = .5 7 k g

5.

What is the rotational inertia of a solid ball.05 meters radius that weighs 80 Newton's, if it is rotated about a diameter. -3 (Answer 8.16 X 10 kg m2/rad)

r = .05 m

W = 80 N 2

6.

Calculate the angular acceleration in rad/s of a wheel that starts from rest and attains an angular velocity of 545 rev/min in 1 2 minute. (Answer .952 rad/s )

7.

A net force of 15 Newton's is applied tangentially to the rim of a wheel having a 5 meter radius. If the rotational inertia of 2 the wheel is .5 kgm2/rad, what is its angular acceleration? (Answer 150 rad/s )

15 N r = 5m

8.

(A) What is the angular displacement (delta θ) in radians of the wheel of problem # 6, during the first 30 seconds? (B) What is it during the second 30 seconds? (Answer 428.4 rad, 1285.2 rad)

PHYSICS CHAPTER 5 SECTION 2 Worksheet 1 9.

(A) If a force of 25 Newton's is applied tangentially to the rim of a uniform disk whose radius is .2 meters and mass is 30 kg, what angular velocity will the disk attain in .2 minutes? (B) What is the angular displacement (delta θ) during this acceleration? (Answer 100 rad/s, 600 rad)

F = 25 N

r = .2m m = 30kg

10.

A disk-shaped wheel 1 meter in radius weighs 2000 Newton's. A force of 50 Newton's is applied tangentially to the rim. After how many seconds does it attain an angular velocity of 1200 rev/min? (Answer 256.5 seconds)

F = 50 N

r = 1m W = 1200 N