Answer:
Three
Explanation:
Oil control rings are designed differently than compression rings. A typical oil control ring consists of three separate pieces: two very thin metal rings called scrapers, and a spacer ring called an expander placed in the groove between them.
The factors that influence the balance of Earth's incoming and outgoing radiation are called "radiative forcings." These forcings can include natural factors like volcanic eruptions and solar variations, as well as human activities such as greenhouse gas emissions.
The conservation of mechanical energy allows to find the results for the questions of the motion of mass in a conservative force are;
a) the velocity at x = 4 m is: v = 16.9 m / s
b) The acceleration at x = 4m is: a = 17.8 m / s²
c) The maximum elongations is: x = 6.67 m
Given parameters
To find
a) The speed
b) The acceleration
c) The maximum value of the distance
The conservation of mechanical energy is one of the most important concepts in physics, stable that if there is not friction the mechanical energy remains constant at all points.
Em = K + U
Where Em mechanical energy, K the kinetical energy ang U the potential energy.
a) Let's find the velocity using the conservation of mechanical energy
Starting point. Where the mass is released.
Em₀ = U (0)
Final point. When for a distance of x = 4 m here we have potential and kinetic energy.
= K + U (4)
They indicate that the only force is conservative, therefore mechanicalenergy is conserved
Em₀ =
0 = ½ m v² + U (4)
½ m v² = -U (4)
v² = 2 / m (αx² - β x³)
Let's calculate
v² = (2 4² - 0.3 4³)
v =
v = 16.9 m / s
b) Acceleration is requested at this point.
We use that potential energy and force are related
F =
We carry out the derivatives
F = 2αx - 3βx²
Let's calculate
F = 2 2 4 - 3 0.3 4²
F = 1.6 N
Now we use Newton's second law that relates the net force with the product of the mass and the acceleration of the body.
F = ma
a =
a =
a = 17.8 m / s²
c) At maximum displacement.
Let's use conservation of mechanical energy
Starting point. Where x = 0 is released
Emo = U (0) = 0
Final point. Point of maximum elongation, kinetic energy is zero
= U (xmax)
Energy is conserved
Em₀ =
-αx² + βx³ = 0
x² (-α + βx) = 0
the solutions of this equation is:
x = 0
-α + βx = 0
x =
Let's calculate
x =
x = 6.67 m
In conclusion using the conservation of mechanical energy we can find the results for the questions of the motion of mass in a conservative force are;
a) the velocity at x = 4 m is: v = 16.9 m / s
b) The acceleration at x = 4m is: a = 17.8 m / s²
c) The maximum elongations is: x = 6.67 m
Learn more here: brainly.com/question/2615468
Answer:
a) v= 284.44
b) a=17.78
c) x=6.67m
Explanation:
a).
b).
c).
Value x,0
Inside the square root is the value of maximum value of x
but that value is not real so:
A. 0.0075 N
B. 0.75 N
C. 750 N
D. 7.5 N
Obviously D. 7.5
Why?
Well, 7.5 is exactly between 7 and 8.
Answer:
False
Explanation: