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
Alex
4 years ago
11

If a rigid body rotates about point O, the sum of the moments of the external forces acting on the body about point O equals whi

ch of the following?
A) IG a

B) IO a

C) m aG

D) m aO
Physics
1 answer:
Drupady [299]4 years ago
6 0

Answer:

The answer to the question is A.

Explanation:

The definition of moment is Force multiplied the distance to the point of interest.

 So the external moment at point O is equal to ⇒ EMо= F×d

 Knowing the definition of moment of inercia (I) and a newtonian Force ( m.a)

We can say that te moment of the externals force at point O is EMо= IGa

Because the rotation of a body in a inmovil point is implicated by the moment of inercia an the action of the gravity in that moment.

 

You might be interested in
You heat your home with electricity generated by a coal-fired power plant. Because energy from the coal is lost in the productio
AlladinOne [14]
Well since you can only heat your home/water with it and your home stove is less efficient than say the zero-emmisions one in gillete WY. and the distribution cost placed on top of that. you would pay more than the coal-made-electricity. plus you would burn more for the same effect. and coal decomposes in oxygen so that's not EPA condoned anymore. so the answer is. . . none. its more advantageous to just use the electricity
6 0
3 years ago
Electromagnetic radiation is more common than you think. Radio and TV stations emit radio waves when they broadcast their progra
Ludmilka [50]

Answer:

Explanation:

1. They have different wavelengths - Because These radiations form a spectra that differs by the size of the wavelength.

2. They have different Frequencies (f) that is frequency = 1/ wavelength

(f = 1/wavelength)

3. They propagate at different speed though a non vacuum media (non vacuum media affect the speed based on the wavelength)

6 0
4 years ago
What factors affect the amount of solar energy that reaches earth's surface
zalisa [80]
Weather
Particles in air such as smoke smog
8 0
4 years ago
Read 2 more answers
If a weightlifter lifts a 286 kg mass 0.25 meters above his head, how much PEg does the mass have?
vazorg [7]

Answer:

Change in potential energy is 700.7 J.

Explanation:

Given:

Mass of the object is, m=286 kg

Height to which the object is raised above his head, h=0.25 m

Acceleration due to gravity is, g=9.8 m/s²

We know that for a mass m raised to a height h, the change in potential energy is given as:

\Delta PE=mgh, where, \Delta PE\rightarrow \textrm{Change in Potential Energy}

Now, plug in the given values and solve.

\Delta PE=286\times 9.8\times 0.25=700.7\textrm{ J}

Therefore, the change in the potential energy is 700.7 J.

3 0
4 years ago
Read 2 more answers
A solenoid of length 8.50 cm and diameter 0.840 cm is wound with 339 turns per centimeter. If the current in the solenoid is dec
natta225 [31]

Answer:

E = 1.14V

Explanation:

Please see attachment below.

6 0
3 years ago
Read 2 more answers
Other questions:
  • How is gravity best described?
    6·2 answers
  • Two small children decide it would be fun to toss a couple of large cats at each other. Cat A (7kg) is thrown at 7m/s and cat B
    6·1 answer
  • A physics major is cooking breakfast when he notices that the frictional force between the steel spatula and the Oiled Steel fry
    6·1 answer
  • A ball is thrown horizontally from a high cliff with a velocity of 5 m/s. Ignoring the slowing of the ball due to air resistance
    13·2 answers
  • Which of the following statements is correct A. College degree isn't as important as it was in the past b. Over time, I can earn
    14·1 answer
  • 1. Do you think that hand signals are important in officiating games? why?​
    9·1 answer
  • A 2.0 x 10^3 kilogram car collides with a tree and is brought to
    12·1 answer
  • Which sentence best explains the difference between potential energy and
    13·1 answer
  • When a satellite is in orbit around the earth the force of gravity on the satellite-
    5·1 answer
  • Which is the luminous object?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!