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
elena55 [62]
2 years ago
9

How much force is on a cart when the acceleration of the cart is 2.6 m/s2

Physics
1 answer:
alexdok [17]2 years ago
8 0

Answer:

F = 13N

Explanation:

You might be interested in
One horse is pulling a 755 kg sled straight ahead applying a force of 1988 N. If the acceleration of the sled is 1.36 m/s2, what
Inessa [10]

Answer:

The coefficient of kinetic friction is 0.13

Explanation:

Newton's second law states that the acceleration of an object is proportional to the net force on it, the factor of proportionality is the mass. So, we can express that law mathematically as:

\sum\overrightarrow{F}=m\overrightarrow{a} (1)

With F the net force, m the mass and a the acceleration of the object. In our case we're interested on what's happening to the sled, then we have to analyze the forces on it, those forces are the weight and the normal force on the vertical direction and the pulling force and frictional force in the horizontal direction. So, because (1) is a vector equation we can express that in their vertical (y) and horizontal (x) components:

F_y=ma_y (2)

F_x=ma_x (3)

On y we have that the acceleration is zero because the sled is not moving upward or downward, remember that the net force on y is the weight (W) pointing downward and the normal force pointing upward:

F_y=W+n=0

Following the convention that positive is upward and negative downward, W=mg=(755)(-9.81):

F_y=(755)(-9.81)+n=0

n=7406.55 N (4)

Now on the x direction we have the sum of the forces is the pulling force (T) and friction force (f)

F_x=F+f=ma_x

Choosing the direction where the horse is pulling F=1988N and the acceleration should be positive too, then:

1988+f=m(1.36)

f=(755)(1.36)-1988=-961.2 N

The negative sign means it's in the opposite direction the horse is pulling

The frictional force is related with the coefficient of kinetic friction in the next way:

|f|=\mu_k n

with μk the coefficient of kinetic friction, and n the normal force that we already found on (4), so we simply solve the last equation for μk:

\mu_k=\frac{|f|}{n}=\frac{961.2}{7406.55}=0.13

4 0
3 years ago
Atoms in a molecule held together through sharing ______. (points 3)
Wittaler [7]
Covalent and ionic bonds
8 0
3 years ago
Read 2 more answers
If we increase the speed of rotation of wheel then the sound produced by cardboard touching the spokes of the wheel will become
Anarel [89]

it will become shrill

5 0
3 years ago
Question 7(Multiple Choice Worth 4 points)
Nimfa-mama [501]
C is the correct answer, as the equation for photosynthesis is carbon dioxide +water=glucose(sugar) + oxygen
3 0
3 years ago
Read 2 more answers
What is the highest point at which weather will generally occur?
faust18 [17]

Answer:

I'd say 85km sorry if wrong

Explanation:

4 0
3 years ago
Read 2 more answers
Other questions:
  • Sometimes when you are training for event you may notice a decrease in improvement in level out of performance true or false
    11·2 answers
  • An air bubble underwater has the same pressure as that of the surrounding water. As the air bubble rises toward the surface (and
    6·1 answer
  • It is noted that a sample of 134La with a half-life of 6.5 minutes has an activity of 2.6 Ci. What was its activity 72 minutes a
    11·1 answer
  • A fisherman casts his lure at an angle of 33 degrees above the horizontal. The lure reaches a maximum height of 2.3 m. Assuming
    9·1 answer
  • The speed of a cruise ship is 50,000 m/hr. How fast is it moving in m/s?
    15·1 answer
  • What is the name of type of relationship that exists between wavelength and frequency ?
    6·1 answer
  • The break light on a car is connected to a 12V battery. If the resulting current is 0.4A what is the resistance of the brake lig
    14·1 answer
  • Please round 1045.2 to three significant digits
    10·2 answers
  • Between the ball and the player's head, there are forces. Which of Newton's laws does this represent? Support your choice.
    12·2 answers
  • According to max weber, flaunting of one’s wealth to show one’s status is called?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!