What is the difference between removing the first wire and the second? Why is this significant?
Solved
Show answers
More tips
- F Food and Cooking What to Give as a Wedding Gift?...
- F Food and Cooking Everything You Need to Know About Pasta...
- C Computers and Internet How to Choose a Monitor?...
- S Style and Beauty How to Get Rid of Peeling Nails: Natural Remedies...
- S Science and Technology Understanding Magnetic Storms: A Guide to This Natural Phenomenon...
- F Family and Home What is Most Important in Men s Lives?...
- G Goods and services Which TV is better - LCD or Plasma?...
- C Computers and Internet Are there special gaming mice?...
- G Goods and services LED-подсветка в LCD-телевизорах: 5 причин, почему она лучше других технологий...
- C Computers and Internet Keep Your Mouse Pad Clean: The Right Way to Clean It?...
Answers on questions: Physics
- P Physics HELP PLEASE WILL GIVE BRAINLIEST Rocks and minerals activity Reflection questions: 1. Describe the ways mining in the real world can affect society, ecosystems,...
- P Physics Write a paragraph on how to become a better leader and have a champion mindset...
- P Physics . Describe the process that is occurring in the above land mass....
- M Mathematics 71% of all bald eagles survive their first year of life. Give your answers as decimals, not percents. If 33 bald eagles are randomly selected, find the probability...
- E English In things fall apart , what did Achebe mean when he said “ if you don’t like someone’s story write your own” ?...
- M Mathematics Houghton Mifflin Harcourt 16.2 independent practice...
- P Physics Why is it more difficult to lean over and push a heavy box across the floor than it is to attach a rope and pull the box at the same angle?...
- E English Which of the topics from Part I do you think will be most important in Partilor de play....
- H History Why did the pearl harbor get attacked by Japan essa...
- P Physics . A 2500 kg car that is accelerating from rest has a forward thrust of 1200 N and a resistive force of 1000 N. A. What is the net force acting on the car? B. What...
Ответ:
frequency 0.529 Hz
Explanation:
This problem of simple harmonic movement. In this the frequency is the inverse of the period and the period (T) can be calculated as the time it takes for the body to give a certain number of oscillations
T= t/n
T = 125/66
T = 1.89 s
f =1/T
f= 0.529 Hz
The expression for the simple harmonic movement is
X = A cos (wt +φ)
To find the speed we derive this formula
V = dx / dt
V = -A w sin (w t + φ)
At the point of equilibrium the function sin is maximum or minimum
Vmax = A w
. w = 2πf
. w = 2π 0.529
. w = 3.32
Vmax = 0.923 3.32
Vmax = 3.06 m / s
The spring constant can be found since the angular velocity is related to the physical constants of the system, spring constant (K) and block mass
. w² = K / m
. K = m w²
. K = 1.01 3.322
. K = 11.1 N / m
For this system the mechanical energy is conserved E = K + U, at the end point the speed is zero, so total mechanical energy is energy potential
E = ½ K A2
E = ½ 11.1 0.9232 = 4.73 J
E = Umax = 4.73 J
At the point at 56.9% of the equilibrium position, for energy is potential and kinetic part, let's start by finding the point value
X = A 56.9 / 100
X = 0.923 56.9 / 100
X = 0.525 m
U = ½ K X²
U = ½ 11.1 0.525²
U = 1.53 J
The kinetic energy can be found from the conservation of mechanical energy E = K + U
K = E-U
K = 4.73 -1.53
K = 3.2 J
To find the velocity we use the equation K = ½ m v2
. v² = 2K / m
. v =√ 2 3.2 / 1.01
. v = 2.52 m / s