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3 years ago

How would you compare and contrast the 3 types of friction?

2 answers:

7 0

Rolling friction . the force that slows down the movement of a rolling object
sliding friction.
Sliding friction : The opposing force that comes into play when one body is actually sliding over the surface of the other body is called sliding friction. e.g. A flat block is moving over a horizontal table.

Kinetic or dynamic friction: If the applied force is increased further and sets the body in motion, the friction opposing the motion is called kinetic friction

victus00 [196]3 years ago

6 0

The three types of friction are the Static friction, Kinetic friction and the Rolling friction.

Further Explanation:

The friction between the two surfaces is the resistive force that acts between the surfaces such that it opposes the relative motion between the surfaces.

The Static friction is the friction force that is required to make an object move from rest. The static friction force is the maximum friction force experienced by a body whereas the body is considered to be under the kinetic friction when it starts to move. The friction force acting on a body while it is sliding over a surface is termed as the kinetic friction of the body.

The rolling friction is a friction force experienced by the circular or a spherical body as it rolls on a surface. In rolling friction, there is no sliding between the surfaces.

Thus, the three types of friction act on a body depending on the shape of the body and also depending on the state of rest or motion of the body.

Learn More:

Which of the following is not a component of a lever brainly.com/question/1073452
Calculate the average translational kinetic energy (sometimes just called average kinetic energy) brainly.com/question/9078768
Forces of attraction limit the motion of particles most in brainly.com/question/947434

Answer Details:

Grade: High School

Chapter: Friction

Subject: Physics

Keywords: Friction, static friction, dynamic, rolling friction, normal reaction, motion, surface, relative motion, sliding.

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5 0

3 years ago

(a) What is the current involved when a truck battery sets in motion 720 C of charge in 4.00 s while starting an engine? (b) How

OLEGan [10]

Answer:

(a) Current flowing through truck battery is 180 A

(b) Time taken in calculator is 333.33 s

Explanation:

(a) Given:

The charge on the truck battery,q = 720 C

Time, t = 4.00 s

Consider I be the current flowing through truck battery.

The relation between current, charge and time is:

I = q/t

Substitute the suitable values in the above equation.

$I=\frac{720}{4}$

I = 180 A

(b) Given:

The charge on the calculator,q = 7.00 C

The current flowing through calculator, I = 0.3 mA = 0.3 x 10⁻³ A

Consider t be the time.

The relation between current, charge and time is:

t = q/I

Substitute the suitable values in the above equation.

$t=\frac{1}{0.3\times10^{-3} }$

I = 333.33 s

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3 years ago

A cue ball with mass 170g hits a stationary number 8 ball, which has mass 160g. The cue ball

forsale [732]

Answer:

0.49 m/s

Explanation:

The law of conservation of linear momentum states that the sum of momentum in a system before and after collision are same. Momentum is a product of mass and velocity of an object hence in this case

$m_cu_c+m_8u_8=m_cv_u+m_8v_8$

Where m represent mass, u and v represent the initial and final velocities respectively, subscripts c and 8 represent cue ball and number 8 ball respectively.

Since number 8 ball is initially at rest, its initial velocity is zero. Replacing mass of cue ball with 170 g while mass of number 8 ball with 160g, then taking final velocity of cue ball as 0.2 m/s and final velocity of 8 ball as 0.3 m/s then we get

$170u_c+160*0=170*0.2+170*0.3\\u_c\approx 0.49 m/s$

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3 years ago

What is a science book

AnnyKZ [126]

Answer:

A book containing information on various types of science related topics.

4 0

2 years ago

Read 2 more answers

If the number of unemployed workers is 19 million, the number in the working-age population is 500 million, and the unemployment

Darina [25.2K]

Answer:

The percentage of the population that is actively participating in the labor market, whether working or looking for a job, is 95% of the total working age population.

Explanation:

If the number of unemployed in a country is 19 million people, and that number represents an unemployment rate of 4%, to know the total number of economically active people in the country we must perform the following calculation:

(19,000,000 / 4) x 100 = X

475,000,000 = economically active population

However, the country has a working-age population of 500 million people, of which only 475 are actively participating in the labor market. To know the percentage that these 475 million people represent, we must perform the following cross multiplication:

500 = 100

475 = X

(475 x 100) / 500 = X

95 = X

The percentage of the population that is actively participating in the labor market, whether working or looking for a job, is 95% of the total working age population.

6 0

3 years ago