Problem 8.72 A uniform disk turns at 2.6 rev/s around a frictionless central axis. A nonrotating...

Question

Question

Problem 8.72 A uniform disk turns at 2.6 rev/s around a frictionless central axis. A nonrotating...

Problem 8.72

A uniform disk turns at 2.6 rev/s around a frictionless central axis. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk . They then turn around the spindle with their centers superposed.

Part A What is the angular frequency in rev/s of the combination? Express your answer using two significant figures.

science physics

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

here angular momentum remain conserve Li = Lf

L = I*w

initially only disk is rotating

Ifor disk = 1/2*MR^2

Li = 2.6 * MR^2/2

Lf = (Irod + Idisk)wf

Irod = ML^2/12

L = 2R = MR^2/3

Lf = 5MR^2/6 *wf

Li = Lf

wf = 3*2.6/5

wf = 1.56 rev/s

Add a comment

Answer 2

Similar Homework Help Questions

A uniform disk turns at 2.7 rev/s around a frictionless central axis. A nonrotating rod, of the same mass as the disk a...

A uniform disk turns at 2.7 rev/s around a frictionless central axis. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk(Figure 1) . They then turn around the spindle with their centers superposed. What is the angular frequency in rev/s of the combination?
A uniform disk turns at 3.6 rev/s around a frictionless central axis. A nonrotating rod, of the same mass as the dis...

A uniform disk turns at 3.6 rev/s around a frictionless central axis. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk(Figure 1). They then turn around the spindle with their centers superposed. Figure 1 of 1 Part A What is the angular frequency in rev/s of the combination? # - - - -
A uniform disk turns at 3.7 rev/s around a frictionless spindle. A nonrotating rod, of the same mass as the disk and len...

A uniform disk turns at 3.7 rev/s around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk. They then turn together around the spindle with their centers superposed. What is the angular frequency in rev/s of the combination?

What is the angular frequency in rev/s of the combination? A uniform disk turns at 2.4 rev/s around a frictionless sp...

What is the angular frequency in rev/s of the combination? A uniform disk turns at 2.4 rev/s around a frictionless spindle. A nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk(Figure 1). They then both turn around the spindle with their centers superposed. Figure 1 of 1
A uniform disk turns at 3.6 rev/s around a frictionless spindle. A non rotating rod, of the same mass as the disk and l...

A uniform disk turns at 3.6 rev/s around a frictionless spindle. A non rotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk . They then both turn around the spindle with their centers superposed. What is the angular frequency in rev/s of the combination? please express answer in proper significant figures and rounding.
3. A uniform solid disk of turns around a frictionless spindle with an angular speed wo...

3. A uniform solid disk of turns around a frictionless spindle with an angular speed wo A hoop with the same mass and radius is dropped onto the disk such that it sticks and begins rotating with the disk. What is the final angular speed? What fraction of the kinetic energy is lost?

A potter's wheel is rotating around a vertical axis through its center at a frequency of 1.7 rev/s. The wheel can be co...

A potter's wheel is rotating around a vertical axis through its center at a frequency of 1.7 rev/s. The wheel can be considered a uniform disk of mass 5.8 kg and diameter 0.40 m. The potter then throws a 3.1 kg chunk of clay that is shaped like a flat disk of radius 8.0 cm, onto the center of the rotating wheel. What is the frequency of the wheel after the clay sticks to it?
A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s . The wheel can be considered a uniform disk of mass 4.7 kg and diameter 0.30 m . The potter then throws a 2.8-kg chunk of clay, approximately shaped as a f

A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s . The wheel can be considered a uniform disk of mass 4.7 kg and diameter 0.30 m . The potter then throws a 2.8-kg chunk of clay, approximately shaped as a flat disk of radius 7.0 cm , onto the center of the rotating wheel.A) What is the frequency of the wheel after the clay sticks to it? Ignore friction.
A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s. The wheel can be co...

A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s. The wheel can be considered a uniform disk of mass 4.9 kg and diameter 0.40m. The potter then throws a 2.7 kg chucnk of clay, approximately shaped as a flat disk of radius 8.0 cm, onto the center of the rotating wheel. What is the frequency of the wheel after the clay sticks to it? Ignore friction/.

A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s . The wheel can be c...

A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s . The wheel can be considered a uniform disk of mass 4.7 kg and diameter 0.32 m . The potter then throws a 2.9-kg chunk of clay, approximately shaped as a flat disk of radius 7.0 cm , onto the center of the rotating wheel. Part A What is the frequency of the wheel after the clay sticks to it? Ignore friction.

Problem 8.72 A uniform disk turns at 2.6 rev/s around a frictionless central axis. A nonrotating...

Homework Answers

Add Answer to:
Problem 8.72 A uniform disk turns at 2.6 rev/s around a frictionless central axis. A nonrotating...

Post as a guest

Earn Coins

A uniform disk turns at 2.7 rev/s around a frictionless central axis. A nonrotating rod, of the same mass as the disk a...

A uniform disk turns at 3.6 rev/s around a frictionless central axis. A nonrotating rod, of the same mass as the dis...

A uniform disk turns at 3.7 rev/s around a frictionless spindle. A nonrotating rod, of the same mass as the disk and len...

What is the angular frequency in rev/s of the combination? A uniform disk turns at 2.4 rev/s around a frictionless sp...

A uniform disk turns at 3.6 rev/s around a frictionless spindle. A non rotating rod, of the same mass as the disk and l...

3. A uniform solid disk of turns around a frictionless spindle with an angular speed wo...

A potter's wheel is rotating around a vertical axis through its center at a frequency of 1.7 rev/s. The wheel can be co...

A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s . The wheel can be considered a uniform disk of mass 4.7 kg and diameter 0.30 m . The potter then throws a 2.8-kg chunk of clay, approximately shaped as a f

A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s. The wheel can be co...

A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0 rev/s . The wheel can be c...

Problem 8.72 A uniform disk turns at 2.6 rev/s around a frictionless central axis. A nonrotating...

Homework Answers

Add Answer to: Problem 8.72 A uniform disk turns at 2.6 rev/s around a frictionless central axis. A nonrotating...

Post as a guest

Earn Coins

Add Answer to:
Problem 8.72 A uniform disk turns at 2.6 rev/s around a frictionless central axis. A nonrotating...