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
V125BC [204]
3 years ago
14

A 600-kg car traveling at 30.0 m/s is going around a curve having a radius of 120 m that is banked at an angle of 25.0°. The coe

fficient of static friction between the car's tires and the road is 0.300. What is the magnitude of the force exerted by friction on the car?
Physics
1 answer:
ikadub [295]3 years ago
5 0

Answer:

f_{fr}=1590.85 N

Explanation:

Here the total force at the horizontal components will be equal to the centripetal force on the car. So we will have:

f_{fr}cos(25)+Nsin(25)=m\frac{v^{2}}{r} (1)

  • f(fr) is the friction force
  • N is the normal force

Now, the sum of forces at the vertical direction is equal to 0.

Ncos(25)-mg-f_{fr}sin(25)=0 (2)          

Let's combine (1) and (2) to find f(fr)

f_{fr}=\frac{(mv^{2}/r)-mgtan(25)}{cos(25)+tan(25)sin(25)}

f_{fr}=\frac{(600*30^{2}/120)-600*9.81*tan(25)}{cos(25)+tan(25)sin(25)}  

f_{fr}=1590.85 N

I hope it helps you!

You might be interested in
What will happen to plant height if the amount of available light is reduced due to global dimming? Which type of investigation
Lorico [155]
The plant will not grow. In fact it could have all the nutrients and all the water it needs, but without a sufficient amount of light, it could die because its leaves are meant for a certain minimum amount of light.

I'll come back and see if you have posted the question you wanted and edit my answer.
6 0
3 years ago
Which of the following improves your range of motion and helps prevent
erma4kov [3.2K]
A. A healthy body composition will improve range of motion and prevent injuries. Staying in a healthy weight range (BMI) prevents overexerting joints. It also helps increase range of motion which in turn reduces injury.
3 0
3 years ago
Carmen is helping load furniture and boxes onto a moving truck. She
drek231 [11]
I think it’s contact I’m not sure
7 0
3 years ago
Read 2 more answers
Can someone solve this problem and explain to me how you got it​
Zarrin [17]

1) The electric force changes by a factor of 25

2) The electric force changes by a factor of 16/9

Explanation:

1)

The magnitude of the electrostatic force between two charges is given by Coulomb's law:

F=k\frac{q_1 q_2}{r^2}

where:

k=8.99\cdot 10^9 Nm^{-2}C^{-2} is the Coulomb's constant

q_1, q_2 are the two charges

r is the separation between the two charges

In this problem, let's call F the initial force between the two charges when they are at a distance of r.

Later, the distance is changed by a factor of 5. Let's assume it has been increased to a factor of 5: so the new distance is

r' = 5r

Therefore, the new force between the charges is:

F' = k' \frac{q_1 q_2}{r'^2}=k' \frac{q_1 q_2}{(5r)^2}=\frac{1}{25}(k' \frac{q_1 q_2}{r'^2})=\frac{F}{25}

So, the force has changed by a factor of 25.

2)

The original force between the two charges is

F=k\frac{q_1 q_2}{r^2}

In this problem, we have:

- The distance between the charges is changed by a factor of 6:

r' = 6r

- The charges are both changed by a factor of 8:

q_1' = 8q_1

q_2' = 8q_2

Substituting into the equation, we find the new force:

F' = k' \frac{q_1' q_2'}{r'^2}=k' \frac{(8q_1) (8q_2)}{(6r)^2}=\frac{64}{36}(k' \frac{q_1 q_2}{r'^2})=\frac{16}{9}F

So, the force has changed by a factor of 16/9.

Learn more about electric force:

brainly.com/question/8960054

brainly.com/question/4273177

#LearnwithBrainly

6 0
3 years ago
A sledge hammer has a mass of 4.0 kg and is moving at a speed of 6.0m/s when it strikes a fence post, driving it 10 cm further i
Afina-wow [57]

Part a)

kinetic energy of the hammer will be

KE = \frac{1}{2} mv^2

here we know that

m = 4 kg

v = 6 m/s

now by the equation of kinetic energy we have

KE = \frac{1}{2}*4 * 6*6

KE = 72 J

Part b)

for finding the force we will have

v_f^2 - v_i^2 = 2 a d

here we know that

v_f = 0

v_i = 6 m/s

d = 10 cm = 0.10 m

now from above equation we have

0 - 6^2 = 2 * a * 0.10

a = -180 m/s^2

now by Newton's II law we have

F = ma

F = 4*180 = 720 N

so it requires 720 N.

8 0
3 years ago
Other questions:
  • The mass of a regulation tennis ball is 57 g. The ball is in contact with the tennis racket for 30 ms. The ball was served at 73
    7·1 answer
  • Which transformation of energy occurs when a fan is turned on and the blades start to rotate?
    11·1 answer
  • What is the primary body that influences Earth's ocean tides? A. the Moon B. Venus C. Mars D. the Sun
    5·2 answers
  • One sees an emission spectrum from a neon sign <br> True<br><br> False<br> 50 points
    6·1 answer
  • The magnitude of the gravitational field strength near Earth's surface is represented by
    9·1 answer
  • Water flows over a section of Niagara Falls at the rate of 1.1 × 106 kg/s and falls 50.0 m. How much power is generated by the f
    12·1 answer
  • Atoms of the same element with varying number of neutrons are called
    10·1 answer
  • If a change in speed “Δv” occurs and the mass starts at rest, would the change in speed also equal the final speed of the mass?
    12·1 answer
  • Given f(x)=2x+7, which of the following is the value of x when f(x)=13?
    7·1 answer
  • If the electric field is 100N/C at a distance of 50 cm from a point charge , what is the value of ?.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!