One string of a certain musical instrument is 75.0-cm-long and
has a mass of 8.75 g. It is being played in a room where the speed
of sound is 344 m/s.
(a) To what tension force must you adjust the string so that,
when vibrating in its second overtone, it produces sound of
wavelength 0.765 m? (Assume that the breaking stress of the wire is
very large and isn’t exceeded.)
(b) What frequency sound does this string produce in its...
A 10.0-cm side square loop is fashioned from a single 4.00-m
long, 100-g wire. One side of the loop is attached to a horizontal,
frictionless axle. The loop is suspended in a region with a uniform
10.0-mT magnetic field oriented vertically. (a) What angle does the
loop make with the vertical when it carries a current of 3.40 A?
(b) What magnetic torque acts on the loop?
A 52 cm long thin string is attached to a 25 g mass. You bring
the mass up until you make a 4.2◦ angle with respect to the
equilibrium position and let go. You start the timer when the
simple pendula has a 2.1◦ angle with respect to the equilibrium
position. (a) What are the equations for the position, velocity,
and acceleration of the system? (b) Using your equations, determine
what the three will equal at the instant you let...
A string of length 1.0m has a mass/length of 2.4 g/m and is
under 460N of
tension. It is vibrating in its third harmonic (n = 3).
1. What is the frequency of the standing wave?
The vibrating string produces a sound wave and sits near a
half-open tube of length L. The
speed of sound is 343m/s.
2. For what minimum value of L does the sound wave produced by
the vibrating
string resonate with the tube (i.e., coincide...
A ladder of length L = 2.8 m
and mass m = 16 kg rests on a floor with coefficient of static
friction ?s = 0.51. Assume the wall is
frictionless.
1)
What is the normal force the floor exerts on the ladder?
2) What is the minimum angle the
ladder must make with the floor to not slip?
3) A person with mass M = 69 kg now
stands at the very top of the ladder. What is the...
One string of a certain musical instrument is 78.0cm long and
has a mass of 8.78g . It is being played in a room where the speed
of sound is 344 m/s.
Part A
To what tension must you adjust the string so that, when
vibrating in its second overtone, it produces sound of wavelength
0.754m ? (Assume that the breaking stress of the wire is very large
and isn
A violin string 20.0 cm long with mass 4.8 g and tension 48 N,
fixed at both ends, oscillates in its n=2 mode. What is the
wavelength in air of the sound emitted by this vibrating string? (
The speed of the sound in air is 343 m/s.)
The answer is 1.534 m, not sure how to find it.
An infant's toy has a 120 g wooden animal hanging from a spring.
If pulled down gently, the animal oscillates up and down with a
period of 0.44 s . His older sister pulls the spring a bit more
than intended. She pulls the animal 26 cm below its equilibrium
position, then lets go. The animal flies upward and detaches from
the spring right at the animal's equilibrium position.If the animal
does not hit anything on the way up, how...
A mass m = 17 kg is pulled along a horizontal floor, with a
coefficient of kinetic friction μk = 0.06, for a
distance d = 5.1 m. Then the mass is continued to be pulled up a
frictionless incline that makes an angle θ = 28° with the
horizontal. The entire time the massless rope used to pull the
block is pulled parallel to the incline at an angle of θ = 28°
(thus on the incline it is...
A mass m = 16 kg is pulled along a horizontal floor with NO
friction for a distance d =8.4 m. Then the mass is pulled up an
incline that makes an angle ? = 25