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
erastovalidia [21]
4 years ago
11

A spring with spring constant 18 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is

then pulled down 6.5 cm and released. The ball makes 19 oscillations in 18 s seconds.
Physics
1 answer:
wlad13 [49]4 years ago
3 0

Answer with Explanation:

We are given that

Spring constant=k=18 N/m

Amplitude,A=6.5 cm=6.5\times 10^{-2}m

1m=100 cm

Number of oscillations=N=19

Time=t=18 s

Frequency=Number of oscillations per second=\nu=\frac{19}{18}=1.06 Hz

Frequency=\nu=\frac{1}{2\pi}\sqrt{\frac{k}{m}}

\nu^2=\frac{1}{4\pi^2}\times \frac{k}{m}

m=\frac{k}{4\pi^2\nu^2}=\frac{18}{4\times (3.14)^2\times (1.06)^2}=0.41 kg

1kg=1000g

m=0.41 \times 1000=410 g

Mass of the ball=410 g

Maximum speed of the ball=A\omega=A(2\pi\nu})

Maximum speed of the ball=v_{max}=6.5\times 10^{-2}\times 2\times 3.14\times 1.06=0.43m/s

Hence, the maximum speed of the ball=0.43 m/s

You might be interested in
Why do scientists use the scientific method when completing experiments.
polet [3.4K]

Answer:

Scientists use the scientific method to collect measurable, empirical evidence in an experiment related to a hypothesis.

Explanation:

8 0
3 years ago
A particle moves along the x axis. It is initially at the position 0.180 m, moving with velocity 0.060 m/s and acceleration -0.3
shusha [124]

Answer:

a

  x_2 = -2.3356

b

 v = -1.384 \ m/s

Explanation:

From the question we are told that

  The initial position of the particle is  x_1 = 0.180 \ m

  The initial  velocity of the particle is  u = 0.060  \  m/s

  The acceleration is   a = -0.380 \  m/s^2

   The time duration is  t = 3.80  \ s

Generally from kinematic equation

    v = u + at

=>  v = 0.060 + (-0.380 * 3.80)

=>  v = -1.384 \ m/s

Generally from kinematic equation

   v^2 = u^2 + 2as

Here s is the distance covered by the particle, so

   (-1.384)^2 = (0.060)^2 + 2(-0.380)* s

=>  s = -2.5156 \ m

Generally the final position of the particle is  

    x_2 = x_1 + s

=>   x_2 = 0.180 + (-2.5156)

=>   x_2 = -2.3356

6 0
3 years ago
3. Looking at the image below label the areas of highest and lowest kinetic energy of both gravitational potential
MArishka [77]

Explanation:

max potential your welcome i love helping outhers :)

8 0
3 years ago
When a potential difference of 10 V is placed across a certain solid cylindrical resistor, the current through it is 2 A. If the
DaniilM [7]

Answer:

Current would decrease 9 times.

Explanation:

Assume all others (potential difference U, resistivity ρ, and length L) are the same, only change in the diameter, we would have the following ratio

\frac{I_1}{I_2} = \frac{U/R_1}{U/R_2} = \frac{U}{U}\frac{R_2}{R_1} = \frac{\rho L/A_2}{\rho L / A_1} = \frac{\rho L}{\rho L}\frac{A_1}{A_2} = \frac{\pi d_1^2/4}{\pi d_2^2/4} = \frac{4\pi}{4\pi}\left(\frac{d_1}{d_2}\right)^2 = 3^2 = 9

I_2 = I_1/9

So the current would decrease 9 times.

7 0
3 years ago
Why do motors have gaps or breaks throughout the rotor and commutator?
Marat540 [252]

Answer: Its the second option

Explanation:

I have the same text and everything I had did it yesterday and picked the second one and it was right so yea. Hopefully that helps. Is this fro STEM physics

4 0
3 years ago
Other questions:
  • What is a common source for a voltage difference
    11·1 answer
  • A. Water has many unique properties. Identify a property of water and explain why this property makes water vital to living orga
    5·1 answer
  • The pump of a water distribution system is powered by a 20-kW electric motor whose efficiency is 90%. The water flow rate throug
    7·1 answer
  • Do cars get better gas mileage with clean air filters? Gas mileage for 10 cars with dirty air filters and clean air filters was
    14·1 answer
  • Solve the proportion for p 30/24=p/8
    6·1 answer
  • What is a compression and a rare fraction on a sound wave
    14·1 answer
  • A car changes its velocity by 30 m/s in 5 seconds, what is the acceleration of the car?
    9·1 answer
  • Directions: Fill in the blank with the correct word. Choose from the list of possible answers in the word bank below:
    12·1 answer
  • A physics instructor wants to project a spectrum of visible light colors from 400 nm to 700 nm as part of a classroom demonstrat
    10·1 answer
  • The unit of electric current is :​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!