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
enot [183]
3 years ago
8

Consider three scenarios in which a particular box moves downward under the pull of gravity :

Physics
1 answer:
luda_lava [24]3 years ago
5 0

Answer:

1. True  WA > WB > WC

Explanation:

In this exercise they give work for several different configurations and ask that we show the relationship between them, the best way to do this is to calculate each work separately.

A) Work is the product of force by distance and the cosine of the angle between them

    WA = W h cos 0

   WA = mg h

B) On a ramp without rubbing

     Sin30 = h / L

     L = h / sin 30

     WB = F d cos θ  

     WB = F L cos 30

     WB = mf (h / sin30) cos 30

     WB = mg h ctan 30

C) Ramp with rubbing

    W sin 30 - fr = ma

   N- Wcos30 = 0

   W sin 30 - μ W cos 30 = ma

    F = W (sin30 - μ cos30)

   WC = mg (sin30 - μ cos30) h / sin30

   Wc = mg (1 - μ ctan30) h

When we review the affirmation it is the work where there is rubbing is the smallest and the work where it comes in free fall at the maximum

Let's review the claims

1. True The work of gravity is the greatest and the work where there is friction is the least

2 False. The job where there is friction is the least

3 False work with rubbing is the least

4 False work with rubbing is the least

You might be interested in
What would the velocity of a wave traveling in a medium change?
zloy xaker [14]
Both the speed and the direction of a wave could change
at the beginning and end of the medium, when the wave
crosses from one medium into a different one. 

But while the wave is moving from one place to another place
in the same medium, its speed and direction don't change. 
8 0
3 years ago
A school bus transporting students to school is an example of
jok3333 [9.3K]

Answer:

The answer is D. If I got this right will you please mark me as Brainliest.

3 0
3 years ago
Read 2 more answers
Difference between weightlessness in space and weightlessness in earth​
nadya68 [22]
In space we feel weightlessness because the earths gravity has less effect on us.The Earths gravitational attraction at those altitudes is only about 11% less than it is at the Earths surface. If you had a ladder that could reach as high as the the shuttles orbit, your weight would be 11% less at the top.
8 0
3 years ago
Which one of these are considered as mechanical energy?
MA_775_DIABLO [31]

Answer:

Kinetic energy and potential energy.

The term 'mechanical energy' refers to the sum of the kinetic energy and the gravitational potential energy of an object,

8 0
2 years ago
A solar eclipse that occurs when the new moon is too far from Earth to completely cover the Sun can be either a partial solar ec
liq [111]

Answer:

ANULAR ECLIPSE

Explanation:

ANULAR ECLIPSE. Because the moon is very far, only a portion of the sun would be obscured, and then only the moon's outer ring will be viewable; this is called the anular eclipse.The ring of fire marks the maximum stage of an annular solar eclipse.

5 0
3 years ago
Other questions:
  • According to the Big Bang theory, the universe was once very __________ and is now __________.
    13·2 answers
  • A boy throws a steel ball straight up. consider the motion of the ball only after it has left the boy's hand but before it touch
    11·2 answers
  • N what way are all sound waves and light waves similar?
    6·1 answer
  • If only a green light shown on a bunny that has black and white fur, what would the bunny look like?
    12·1 answer
  • What is the relationship between potential energy and kinetic energy?
    12·1 answer
  • A plank of length L and mass M hangs from an axle passing through one end. The other end is allowed to hang down so that it just
    5·1 answer
  • Where did all the golden carals go?
    9·1 answer
  • This table shows the mass and volume of four different objects.
    13·2 answers
  • A man is pulling on his dog with a force of 34.7 N directed at an angle of 24.4° to the horizontal. Find the x component of this
    15·1 answer
  • I was walking down the street and collapsed. My heart was racing and I struggled with
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!