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
777dan777 [17]
2 years ago
14

Normal force is exerted _____to the surface of an object.

Physics
2 answers:
denis23 [38]2 years ago
7 0
<h2>Answer:</h2>

<u>The correct option is </u><u>A. perpendicular</u>

<h2>Explanation:</h2>

In Physics, the normal force is the component of a contact force that is perpendicular to the surface that an object contacts. It is the support force exerted upon an object that is in contact with another stable object. Normal Force will be always acting opposite to the force falling on the surface. For example, if a book is resting upon a surface, then the surface is exerting an upward force upon the book in order to support the weight of the book.

Elanso [62]2 years ago
3 0

The normal force is always (underline, bold) is always perpendicular to the surface an object is sitting on. If the object is on an inclined plane, then the normal will not be vertical but it will be perpendicular to the angle of the incline.

The diagram below (left) shows a normal force (GH) that is not vertical, but it is perpendicular to the surface. The object on the right is the more usual normal a mass on a table top.

The vertical line on the right is the normal and it points up.

You might be interested in
Atmospheric pressure is due to the weight _______
Kryger [21]

Of the gravitational pull and other things like mass. Planet earth it,s self as you said sir.

7 0
3 years ago
Friction is necessary when you are on a bike to stay
zzz [600]

Answer:

yes friction is needed hope this helps might of been to long tho

7 0
2 years ago
Please help with this
sertanlavr [38]

Answer:I have to say 56

Explanation: because it is going up by 8

6 0
2 years ago
A spring of spring constant k is attached to a support at the bottom of a ramp that makes an angle θ with the horizontal. A bloc
Nikitich [7]

Answer:

x=\frac {kd^{2}}{2(mgsin\theta +\mu_{k}mgcos\theta)}

Explanation:

From the law of conservation of energy

Energy lost  by the spring, W=Kinetic energy gained, KE+Potential energy gained, PE+Work done by friction, Fr

0.5kd^{2}=0.5mv^{2}+mgLsin\theta+\mu_{k}mgcos\theta x

x(mgsin\theta+\mu_{k}mgcos\theta)=0.5kd^{2}

x=\frac {kd^{2}}{2(mgsin\theta +\mu_{k}mgcos\theta)}

The required distance from A to B is x=\frac {kd^{2}}{2(mgsin\theta +\mu_{k}mgcos\theta)}

5 0
3 years ago
You know your mass is 62 kg but when you stand on a bathroom scale in an elevator it says your mass is 77 kg what is the acceler
lbvjy [14]
In a stationary situation, the weight of person is
W=mg=(62 kg)(9.81 m/s^2) = 608.2 N
This is the weight "felt" by the scale, which is basically the normal reaction applied by the scale on the person, and which uses the value of g (9.81) as reference to convert the weight (602.8 N) into a mass (62 kg).

When the person is in the elevator, the scale says 77 kg. The scale is still using the same value of conversion (9.81), so the apparent weight "felt" by the scale is
W' = m'g=(77 kg)(9.81 m/s^2)=755.4 N
This is the normal reaction applied by the scale on the person, and which is directed upward. Besides this force, there is still the weight W of the person, acting downward. So, if we use Newton's second law:
\sum F = ma
W-W'=ma
where a is the acceleration of the elevator. If we solve for a, we find
a= \frac{W-W'}{m}= \frac{608.2N-755.4N}{62 kg}=-2.37 m/s^2
The negative sign means the acceleration is in the opposite direction of g (which we take positive), so it means the elevator is going upward.
4 0
3 years ago
Other questions:
  • Suppose you measure a standing person's blood pressure by placing the cuff on his leg 0.470 m below the heart. calculate the pre
    6·1 answer
  • Is there more potentioal energy at the top of bottom of a ramp?
    5·1 answer
  • In the equation for Ohm’s law what does I stand for?
    5·1 answer
  • Discuss how the gradualist model of evolution differs from the punctuated equilibrium model of evolution
    14·1 answer
  • A car goes North a distance of 120 kilometers during a time period of 3.0 hours. What is the average
    13·1 answer
  • You push a 45 kg wooden box across a wooden floor at a constant speed of 1.0 m/s. The coefficient of kinetic friction is 0.25. N
    12·1 answer
  • What is the root cause of earths magnetic field?
    15·1 answer
  • An object's speed is 0.8 m/s, and its momentum is 200 kg-m/s What is the mass of the object?
    13·1 answer
  • Thanks for helping me
    6·2 answers
  • Many college students have a mini-fridge in their dorm room. A standard mini fridge costs roughly $100, uses about 100 watts of
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!