1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Firlakuza [10]
3 years ago
8

A mass is attached to the end of a spring and set into simple harmonic motion with an amplitude A on a horizontal frictionless s

urface. Determine the following in terms of only the variable A.
(a) Magnitude of the position (in terms of A) of the oscillating mass when its speed is 50% of its maximum value.
(b) Magnitude of the position (in terms of A) of the oscillating mass when the elastic potential energy of the spring is 50% of the total energy of the oscillating system.
Physics
1 answer:
IgorLugansk [536]3 years ago
5 0

Answer:

Explanation:

Assuming  motion of equation of SHM as

x=A\cos \omega t

where, A=amplitude

\omega =angular\ frequency

t=time

thus velocity at any Point x is given by

v=\omega \Sqrt{A^2-x^2}

when speed is 50 % of its maximum value

v=0.5 A\omega

0.5 A\omega =\omega \Sqrt{A^2-x^2}

\frac{A^2}{4}=A^2-x^2

x=\frac{\sqrt{3}}{2}A

(b)When Potential Energy is 50 % of total energy

Total Energy =\frac{1}{2}kA^2

potential energy at any x is given by U=\frac{1}{2}kx^2

U=0.5\times \frac{1}{2}kA^2

\frac{1}{2}kx^2=0.5\times \frac{1}{2}kA^2

x=\frac{A}{\sqrt{2}}

   

You might be interested in
Which object will be considered to be in free fall
Pani-rosa [81]
It depends on what they are 
3 0
3 years ago
Read 2 more answers
How does air resistance affect an object’s speed?
tatuchka [14]
When air resistance<span> acts, acceleration during a fall </span>will<span> be less than g because </span>air resistance affects<span> the motion of the falling </span>objects<span> by slowing it down. </span>Air resistance<span> depends on two important factors - the</span>speed<span> of the </span>object<span> and its surface area. Increasing the surface area of an </span>object<span> decreases its </span>speed<span>.</span>
4 0
3 years ago
Forces can act on an object in the same direction or in opposite. how does each situation affect the motion of the object?
Anon25 [30]



Hi pupil here's your answer ::




➡➡➡➡➡➡➡➡➡➡➡➡➡



Action and Reaction do not act on the same body !! If they acted on the same body, the resultant force will be zero and their could be never accelerated motion.

If both the forces acted on the same body, then if they are equal to opposite direction the object will remain stationary. If on of the forces is greater than other the object will move in the direction of greater force.

If both acted in the same direction there would be an accelrated motion.




⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅





Hope this helps . . . . .
5 0
3 years ago
1. ¿Cuál es el actor clave de del exceso de peso corporal?
Slav-nsk [51]

El factor mas importante para el exceso de peso es un  exceso de energía creada por una alimentación excesiva

El peso de un cuerpo es definido por la relación entre la energía requerida para los procesos vitales del cuerpo, sus actividades físicas diarias y la energía suministra en forma de alimentos.

Cuando estos dos parámetros están en balance el peso es estable, pero cuando la cantidad de alimentos aumenta o el valor energético de los mismo aumenta se tiene un exceso de energía que el cuerpo almacena en forma de grasa corporal, este el el factor mas importante para el exceso de peso.

En conclusión el factor mas importante para el exceso de peso es un  exceso de energía por una alimentación excesiva

aprende mas acerca del peso corporal aquí:

brainly.com/question/13032223

8 0
2 years ago
The core of a 400 Hz aircraft transformer has a net cross-sectional area of 13 cm2. The maximum flux density is 0.9 T, and there
jenyasd209 [6]

Answer:

32.76 Volt

Explanation:

frequency, f = 400 Hz

Area of crossection, A = 13 cm²

Maximum flux density, B = 0.9 tesla

Number of turns in secondary coil, N = 70

Let the maximum induced voltage is e.

According to the Faraday's law of electromagnetic induction, the induced emf is equal to the rate of change of magnetic flux.

e = dФ/dt

e=\frac{NBA}{t}

Time is defined as the reciprocal of frequency.

So, e = N B A f

e = 70 x 0.9 x 13 x 10^-4 x 400

e = 32.76 volt

4 0
3 years ago
Other questions:
  • What do you think that astronomers mean when they use the term observable universe?
    15·1 answer
  • The temperature of the cosmic background radiation is measured to be 2.7 k. What is the wavelength of the peak in the spectral d
    14·1 answer
  • I do not know the answer nor the equation.
    11·1 answer
  • At sunset, the sun appears reddish. What is MOST LIKELY the reason for this phenomenon?
    5·2 answers
  • Dimension of young modulus​
    7·2 answers
  • If a car can go from 0 to 60 mi/hr in 8.0 seconds, what would be its final speed after 5.0 seconds if its starting speed were 50
    15·2 answers
  • How are power ratings used to describe machines?
    11·2 answers
  • A solenoid with 35 turns per centimeter carries a current I. An electron moves within the solenoid in a circle that has a radius
    9·1 answer
  • 2. A 50 kg diver is standing on the edge of a 15 m high cliff. What is his potential energy?
    14·1 answer
  • How fast is an object going if it travels from San Diego to Anaheim in 1.25 hours (hr)? The distance from San Diego to Anaheim i
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!