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
slamgirl [31]
3 years ago
14

A 3.90 kg block is in equilibrium on an incline of 31.0◦. The acceleration of gravity is 9.81 m/s2 . What is Fn of the incline o

n the block? Answer in units of N.
Physics
1 answer:
storchak [24]3 years ago
4 0

Answer:

Explanation:

The sum of the pore along the plane is expressed according to Newton's law

Fn-Ff = ma

Fn is the moving force

Ff = nR = frictional force

m is the Mass

a is the acceleration

Substitute the given values

Fn - nR = ma

Fn - tan31°(mgcostheta) =3.9(9.8)

Fn - tan31(3.9(9.8)cos31) = 3.9(9.8)

Fn - tan31(38.22cos31)= 38.22

Fn - 32.76tan31 = 38.22

Fn-19.68 = 38.22

Fn = 38.22+19.68.

Fn = 57.90N

Hence Fn (moving force) of the inclined block is 57.90

You might be interested in
Some lactic acid in the muscles dissipates during .
Aloiza [94]
I believe the answer would be oxygeon deficit.
6 0
3 years ago
What properties of water make it useful for washing and cleaning
Diano4ka-milaya [45]
If it i hot it makes it easy to clean
4 0
3 years ago
. A crane does 62,500 joules of work to lift a boulder a distance of 25.0 meters. How much did the boulder
ELEN [110]

Answer:

<h2>2500 N</h2>

Explanation:

The weight of the object can be found by using the formula

f =  \frac{w}{d}  \\

w is the workdone

d is the distance

From the question we have

f =  \frac{62500}{25}  \\

We have the final answer as

<h3>2500 N</h3>

Hope this helps you

3 0
2 years ago
If a body of water has high turbidity levels, what can most likely be concluded?
arsen [322]
The water is likely to be dirty or not clear enough. I mean, if you through a key into the body of water, you can't see the key at the bottom of the water body because of impurities which make the water look dirty or not visible or transparent enough.
6 0
3 years ago
an extended spring stores: A. radiant energy B. potential energy C. kinetic energy D. chemical energy
Svetradugi [14.3K]
Potential energy

represented by PE=1/2 kx^2
where k is the spring constant and x is the displacement
6 0
3 years ago
Read 2 more answers
Other questions:
  • 15 PLEASE HELP
    7·1 answer
  • A box slides down a frictionless plane inclined at an angle θ ¸ above the horizontal. The gravitational force on the box is dire
    11·1 answer
  • According to the second law of thermodynamics, it is impossible for ____________. According to the second law of thermodynamics,
    13·1 answer
  • To do your homework correctly you should (5 points)
    5·2 answers
  • A wire carries a current of 4.1 A. How many electrons per second are passing any cross sectional area of the wire? Enter your an
    5·1 answer
  • The formula of force is newton and​
    15·1 answer
  • HELP ME ASAP!!!! PIC IS DOWN BELOW!
    8·2 answers
  • How did team sports like basketball influence and change the lives of the person featured in the story?​
    15·1 answer
  • What does it mean when a wave’s amplitude increases?
    10·1 answer
  • A car travels around a curve. What can you say about the centripetal force if the velocity is tripled?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!