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
Dimas [21]
3 years ago
5

A brave child decides to grab onto an already spinning merry‑go‑round. The child is initially at rest and has a mass of 25.5 kg.

The child grabs and clings to a bar that is 1.55 m from the center of the merry‑go‑round, causing the angular velocity of the merry‑go‑round to abruptly drop from 35.0 rpm to 19.0 rpm. What is the moment of inertia of the merry‑go‑round with respect to its central axis?
Physics
1 answer:
Svetllana [295]3 years ago
5 0

Answer:

72.75 kg m^2

Explanation:

initial angular velocity, ω = 35 rpm

final angular velocity, ω' =  19 rpm

mass of child, m = 15.5 kg

distance from the centre, d = 1.55 m

Let the moment of inertia of the merry go round is I.

Use the concept of conservation of angular momentum

I ω = I' ω'

where I' be the moment of inertia of merry go round and child

I x 35 = ( I + md^2) ω'

I x 35 = ( I + 25.5 x 1.55 x 1.55) x 19

35 I = 19 I + 1164

16 I = 1164

I = 72.75 kg m^2

Thus, the moment of inertia of the merry go round is 72.75 kg m^2.

You might be interested in
Maria feels overwhelmed by everything she needs to do for school by next week. How can she best manage this stress?
FrozenT [24]

Answer: Option (b) is the correct answer.

Explanation:

Stress is a situation in which our mind or body feel the pressure from our surroundings, ideas or thoughts. Stress causes distress in the body and mind of an individual.

For example, Ria has not done her homework and she is worried what punishment might her teacher give her when she get to know this.

When can get relive from stress by talking about our thoughts or worries with an individual. The other person might help us solve our problems or he might suggest us in a better way.

Therefore, we can conclude that Maria best manage this stress by talking to family, friends, and teachers for support.

3 0
2 years ago
Read 2 more answers
A 1.5 kilogram car is moving at 10 meters per second east. A braking force acts on the car for 5.0 seconds, reducing its velocit
Arada [10]

Answer:

I don't know

Explanation:

8 0
3 years ago
Which stretch focuses on stretching the glutes and hamstrings while laying on your back?
WINSTONCH [101]

Answer:

knee to chest

Explanation:

I took the test

5 0
2 years ago
Read 2 more answers
For each of the problems below, you will need to draw a graph to find the solution.
Gelneren [198K]

Answer:

Final velocity (v) of an object equals initial velocity (u) of that object plus acceleration (a) of the object times the elapsed time (t) from u to v. Use standard gravity, a = 9.80665 m/s2, for equations involving the Earth's gravitational force as the acceleration rate of an object.

Explanation:

3 0
2 years ago
Question is down below
rosijanka [135]

The vertical components of velocity is 10.35 m/s and the horizontal component of velocity is 38.6 m/s

<h3>What are the components of velocity?</h3>

We know that velocity is a vector quantity, a vector often can be resolved into its components. The vertical components is V sinθ while the horizontal component is vcosθ.

Hence;

Vertical component = 40 m/s sin 15 degrees = 10.35 m/s

Horizontal component = 40 cos 15 degrees = 38.6 m/s

Learn more about components of velocity:brainly.com/question/14478315

#SPJ1

7 0
1 year ago
Other questions:
  • A team of engineering students is designing a catapult to launch a small ball at A so that it lands in the box. If it is known t
    14·1 answer
  • What is the difference between the electrical circuitry that controls your Home lights appliances and the circuitry that you wou
    8·1 answer
  • 10 POINTS ANSWER FAST!
    7·2 answers
  • Which of the following jobs does not require good swimming ability
    6·1 answer
  • It is known that a certain kind of algae in the Dead Sea can double in population every 2 days. Suppose that the population of a
    14·1 answer
  • 6. The electric field caused by an electron is weakest near the electron.
    15·1 answer
  • Give an example of Newton's 1st law​
    13·1 answer
  • FLAMING OR ALBERT .........
    14·2 answers
  • In three to five sentences, identify the acid, base, conjugate acid, and conjugate base. Use patterns in the periodic table to e
    10·1 answer
  • 3. What is mechanical advantages and velocity ratio of a machine?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!