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
Galina-37 [17]
3 years ago
11

2. A woman prevents a 3kg brick from falling by pressing it against a vertical wall. The coefficient of friction

Physics
1 answer:
Anettt [7]3 years ago
6 0
<h3>Answer:</h3>

49 N

<h3>Explanation:</h3>

<u>We are given;</u>

  • Mass of the brick as 3 kg
  • The coefficient of friction as 0.6

We are required to determine the force that must be applied by the woman so the brick does not fall.

  • We need to importantly note that;
  • For the brick not to fall the, the force due to gravity is equal to the friction force acting on the brick.
  • That is; Friction force = Mg

But; Friction force = μ F

Therefore;

μ F = mg

0.6 F = 3 × 9.8

0.6 F = 29.4

      F = 49 N

Therefore, she must use a force of 49 N

You might be interested in
Please help will mark brainleist <br> ASAP
kiruha [24]

Answer:

B - Earth's path around the Sun

Explanation:

4 0
2 years ago
Read 2 more answers
I need help please...
Natalka [10]
No cluuuueee :/ sowwwwyyy but good luck
6 0
3 years ago
Read 2 more answers
Why is the weight of the ruler not include in the calculation of moment?​
Feliz [49]

Answer:

Since the distance between the pivot and its weight is zero, the moment of its weight about the pivot (= weight × 0) is zero. Hence, the weight of the ruler can be ignored.

Hope this helps:)

3 0
3 years ago
What does Newtons first law of motion say about objects at rest and objects in motion?
Alborosie

Answer:

Explanation:

an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

6 0
3 years ago
13. Which statement correctly describes the human heart? A. It has three chambers, and pumps blood directly into veins. B. It ha
Marta_Voda [28]
Number 13 is D the heart has 4 chambers and pumps blood to the arteries and number 14 us C

8 0
3 years ago
Read 2 more answers
Other questions:
  • Rock composed of many thin layers. This image appears in an Earth science magazine with this caption: "A non-foliated rock found
    11·2 answers
  • If you were to be drawn into a black hole, what would happen? To the black hole, not to you.
    12·1 answer
  • (Select all that apply)
    7·2 answers
  • The windshield of a car has a total length of arm and blade of 9 ​inches, and rotates back and forth through an angle of 93degre
    6·2 answers
  • Limestone is an example of a chemical sedimentary rock. describe how limestone may form
    9·1 answer
  • Two or more organs working together form
    9·1 answer
  • Which of the following statements is true?
    7·1 answer
  • red light from a He-Ne laser is at 590.5 nm in the air. it is fired at an angle of 31.0 to horizontal at a flat transparent crys
    15·1 answer
  • A typical laboratory centrifuge rotates at 4000 rpm. Testtubes have to be placed into a centrifuge very carefully because ofthe
    12·1 answer
  • Which part of the curve shows:
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!