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
Lady_Fox [76]
2 years ago
10

1. Apply a constant force of 50 N directed to the right of the 50 kg Box. (2 pts)

Physics
1 answer:
kotegsom [21]2 years ago
7 0

As the box is moving with a constant velocity, the two forces acting on the box are canceling each other.

Then   friction force = 80 Newtons              but in the opposite direction.

Friction force =  Mu  * Normal force exerted by ground  =  Mu * weight of box

So we find Mu.

Mu = coefficient of friction between box and horizontal surface

          = Force of friction / weight  =  80 / 50 * 9.81 = 0.163

When an identical box is placed on top, the force of friction is

      = Mu * total weight = 0.163 * (50+50) * 9.81 = 159.9 Newtons

You might be interested in
Which of the following statements about price elasticity of demand is​ true?
STatiana [176]

Answer:

B. The elastic portion of a​ straight-line, downward-sloping demand curve corresponds to the segment above the midpoint.

Explanation:

Elasticity measures the sensitivity of one variable to another. Specifically it is a figure that indicates the percentage variation that a variable will experience in response to a variation of another one percent.

The elasticity of demand measures the reaction of demand when one of the factors that affects it varies.

<u>Elasticity - Price of demand.</u>

easure the sensitivity of the quantity demanded to price variations. It indicates the percentage variation that the quantity demanded of a good will experience if its price rises by 1 percent.

<u> Elastic Demand </u>

The demand quantity is relatively sensitive to price variations, so the total expenditure on the product decreases when the price rises, the price elasticity takes value greater than -∞ but less than -1

7 0
3 years ago
On a horizontal surface is located
Ierofanga [76]

By Newton's second law, the net vertical force acting on the object is 0, so that

<em>n</em> - <em>w</em> = 0

where <em>n</em> = magnitude of the normal force of the surface pushing up on the object, and <em>w</em> = weight of the object. Hence <em>n</em> = <em>w</em> = <em>mg</em> = 196 N, where <em>m</em> = 20 kg and <em>g</em> = 9.80 m/s².

The force of static friction exerts up to 80 N on the object, since that's the minimum required force needed to get it moving, which means the coefficient of <u>static</u> friction <em>µ</em> is such that

80 N = <em>µ</em> (196 N)   →   <em>µ</em> = (80 N)/(196 N) ≈ 0.408

Moving at constant speed, there is a kinetic friction force of 40 N opposing the object's motion, so that the coefficient of <u>kinetic</u> friction <em>ν</em> is

40 N = <em>ν</em> (196 N)   →   <em>ν</em> = (40 N)/(196 N) ≈ 0.204

And so the closest answer is C.

(Note: <em>µ</em> and <em>ν</em> are the Greek letters mu and nu)

3 0
3 years ago
Help me fast and i brainliest.
nexus9112 [7]
There are correlation and causation between the force of the finger and the movement of the books
8 0
3 years ago
Why do most amphibians return to the water to reproduce?
Ymorist [56]
C. amphibian eggs do not contain a protective shell
5 0
1 year ago
Read 2 more answers
____________ occurs when an energy source transfers heat directly to another object through space; an example would be an object
lapo4ka [179]
B is the answer Radiation

5 0
2 years ago
Read 2 more answers
Other questions:
  • Because darker colors have more visual weight than lighter colors, where should they be used in a design? A. Higher in an arrang
    11·2 answers
  • A point charge Q is located a short distance from a point charge 3Q, and no other charges are present. If the electrical force o
    5·1 answer
  • A semi-infinite solid is
    13·1 answer
  • If you take a bar magnet with both n &amp; s poles and cut it in half, you get
    7·1 answer
  • Mrs. Drover is able to see the taxi driver because of the aperture, or
    11·1 answer
  • Two capacitors give an equivalent capacitance of 9.42 pF when connected in parallel and an equivalent capacitance of 1.68 pF whe
    10·1 answer
  • How does electricity work in a vacuum
    9·1 answer
  • Is calculating the change of velocity the same as calculating acceleration? ​
    13·1 answer
  • Three forces acting at a point keep it in equilibrium . If the angle between two of the forces , 3 N and 3 Nis 120°, then the th
    12·1 answer
  • In which phase is the substance when its temperature is 250 degrees Celsius?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!