ONLY ANSWER NO. 4 THANK YOU LOscillatormFigure 2a. Sketch the shape of the string for the fundamental (lowest possible frequency) standing-wave mode of vibration of this string. In this case, how many wavelengths fit on thestring?b. What mass m must be hung from the right end of the string so that the string tension iswhat is needed to produce the standing wave that you drew in part (a) at the given 75Hz oscillation frequency?c. Sketch the shape of the string for the second harmonic (next possible frequency abovethe fundamental) mode of vibration of this string. In this case, how many wavelengthsfit on the string?d. What mass m must be hung from the right end of the string to produce the standingwave that you drew in part (c)?4. A merry-go-round has a radius of 2.0 m and a moment of inertia 300 kgm?. A boy of mass50 kg runs tangent to the rim at a speed of 4.0 m/s and jumps on. If the merry-go-round isinitially at rest, what is the angular velocity after the boy jumps on?5. A sculpture weighing 10,000 N rests on a horizontal surface at the top of a 6.0 m tall verticalpillar. The pillar's cross-section area is 0.20 m² and it is made of granite with a mass densityof 2700 kg/m'. Find the compressive stress at the cross-section located 3.0 m below the topof the pillar and the value of the compressive strain of the top 3.0 m segment of the pillar.6. A block weighing 1.2 N is hung from a spring with a spring constant of 6.0 N/m, as shownin Figure 3.

Answered: Image /qna-images/answer/20b10555-9e3e-47fd-8e08-688626ae143b.jpg

4. A merry-go-round has a radius of 2.0 m and a moment of inertia 300 kgm?. A boy of mass 50 kg runs tangent to the rim at a speed of 4.0 m/s and jumps on. If the merry-go-round is initially at rest, what is the angular velocity after the boy jumps on?

4. A merry-go-round has a radius of 2.0 m and a moment of inertia 300 kgm?. A boy of mass 50 kg runs tangent to the rim at a speed of 4.0 m/s and jumps on. If the merry-go-round is initially at rest, what is the angular velocity after the boy jumps on?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter18: Superposition And Standing Waves

Section: Chapter Questions

Problem 29PQ

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ONLY ANSWER NO. 4 THANK YOU

L
Oscillator
m
Figure 2
a. Sketch the shape of the string for the fundamental (lowest possible frequency) standing-
wave mode of vibration of this string. In this case, how many wavelengths fit on the
string?
b. What mass m must be hung from the right end of the string so that the string tension is
what is needed to produce the standing wave that you drew in part (a) at the given 75
Hz oscillation frequency?
c. Sketch the shape of the string for the second harmonic (next possible frequency above
the fundamental) mode of vibration of this string. In this case, how many wavelengths
fit on the string?
d. What mass m must be hung from the right end of the string to produce the standing
wave that you drew in part (c)?
4. A merry-go-round has a radius of 2.0 m and a moment of inertia 300 kgm?. A boy of mass
50 kg runs tangent to the rim at a speed of 4.0 m/s and jumps on. If the merry-go-round is
initially at rest, what is the angular velocity after the boy jumps on?
5. A sculpture weighing 10,000 N rests on a horizontal surface at the top of a 6.0 m tall vertical
pillar. The pillar's cross-section area is 0.20 m² and it is made of granite with a mass density
of 2700 kg/m'. Find the compressive stress at the cross-section located 3.0 m below the top
of the pillar and the value of the compressive strain of the top 3.0 m segment of the pillar.
6. A block weighing 1.2 N is hung from a spring with a spring constant of 6.0 N/m, as shown
in Figure 3.

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