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
jenyasd209 [6]
3 years ago
10

The kinetic energy of a rotating body is generally written as K=12Iω2, where I is the moment of inertia (also known as rotationa

l inertia) of the body. Find the moment of inertia of the particle described in the problem introduction with respect to the axis about which it is rotating. Assume ω = 34.0 rad/s .
Physics
1 answer:
agasfer [191]3 years ago
4 0

Answer

given,

expression of Kinetic energy of rotating body

K = \dfrac{1}{2}I\omega^2

ω = 34.0 rad/s

Assuming mass of the particle equal to 13 Kg

and perpendicular distance from the particle to the axis is r = 1.25 m

now,

moment of inertia of particle = ?

from the given expression

I= \dfrac{2K}{\omega^2}..............(1)

we know

K = \dfrac{1}{2}mv^2

v = r ω

K = \dfrac{1}{2}mr^2\omega^2

putting value in equation (1)

I= \dfrac{2\dfrac{1}{2}mr^2\omega^2}{\omega^2}

I =mr^2

I =13 \times 1.25^2

I = 20.3125 kg.m²

You might be interested in
Please help!! I will give brainliest!
grandymaker [24]

Answer:

Depends.

Explanation:

Whether the object is going left or right, the speed will stay the same until friction eventually stops it. <em>However, </em>if, for example, we're talking about an object going straight before veering right, then yes, speed <em>does</em> matter. An object will normally have to speed up or slow down momentarily when changing direction to keep itself sustained on the ground.

So, honestly? It really depends on what we're talking about!

Hope this helped!

Source(s) used: None.

7 0
3 years ago
Un avión vuela a una velocidad de 900 km/h. Si tarda en viajar desde Canarias hasta la península 180 s ¿qué distancia recorre en
wel

Answer:

El avión recorrió 45 km en los 180 s.

Explanation:

La relación entre velocidad, distancia y tiempo se da de la siguiente manera;

Velocidad= \dfrac{Distancia}{Hora}

Por lo cual los parámetros dados son los siguientes;

Velocidad = 900 km/h = 250 m / s

Tiempo = 180 s

Estamos obligados a calcular la distancia recorrida

De la ecuación para la velocidad dada arriba, tenemos;

Distancia recorrida = Velocidad pf viaje × Tiempo de viaje

Distancia recorrida = 900 km/h × 180 s = 900

Distancia recorrida = 900 km/h × 1 h/60 min × 1 min/60 s × 180 s = 45 km

Por lo tanto, el avión viajó 45 km en 180 s.

8 0
3 years ago
which best describes what happens with the sonar to sound pulses from a ship after they hit the ocean floor?
lakkis [162]

Answer:

With sonar, what happens to sound pulses from a ship after they hit the ocean floor? ... They bounce back to the ship.

Explanation:

3 0
3 years ago
Your backpack has a mass of 8 kg. You drop it from a height of 1.3m. How much work is done by gravity as the backpack falls?
olga_2 [115]

Answer:

The answer is C.

Explanation:

I guessed and it was right

6 0
3 years ago
Read 2 more answers
Some expressways are curved, banked and designed to maximize ___________ at higher speeds.
Liono4ka [1.6K]

Answer:

Safety

Explanation:

Expressways are banked to resist centifugal action

6 0
3 years ago
Other questions:
  • What Is the acceleration of a toy car that starts from rest and has a speed of 0.12 m/s after 0.1?
    6·1 answer
  • What happens to a gas that is enclosed in a rigid container when the temperature of the gas is increased?
    15·1 answer
  • All of the following are a part of the scientific process EXCEPT _______.
    6·1 answer
  • A train travels 1000 m south for 100 s. What is the
    7·1 answer
  • Please answer a short answer why cant we survive without moving​
    14·2 answers
  • Difference between global warming and climate change
    11·1 answer
  • Martha was leaning out of the window on the second floor of her house and speaking to Steve. Suddenly, her glasses slipped from
    6·1 answer
  • What happens to jetstream’s as they get closer to the equator
    11·2 answers
  • A closely wound search coil has an area of 3.13 cm2, 135 turns, and a resistance of 61.1 Ω. It is connected to a charge-measurin
    9·1 answer
  • Which process of ammonia processing will Eden use? Eden owns a fertilizer manufacturing factory. Ammonia is used to prepare nitr
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!