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
Leto [7]
3 years ago
6

When attempting to determine the coefficient of kinetic friction, why is it necessary to move the block with constant velocity

Physics
1 answer:
Readme [11.4K]3 years ago
4 0

Answer:

Explanation:

In order to measure the coefficient of friction , we apply external force to move the body . When external force comes in motion , we adjust the external force so that it moves with zero acceleration or uniform velocity . In this case external force becomes equal to kinetic frictional force and then net force becomes zero because

net force = mass x acceleration = m x 0 = 0

Now frictional force = μ mg where μ is coefficient of kinetic friction

so F = μ mg where F is external force applied

μ = F / mg

Hence , to make external force equal to frictional force , it is necessary to make acceleration of body zero .

You might be interested in
The kinetic energy of an object with a mass of 6.8 kg and a velocity of 5.0 m/s is J. (Report the answer to two significant figu
abruzzese [7]

Answer:

\boxed{\sf Kinetic \ energy \ (KE) = 85 \ J}

Given:

Mass (m) = 6.8 kg

Speed (v) = 5.0 m/s

To Find:

Kinetic energy (KE)

Explanation:

Formula:

\boxed{ \bold{\sf KE =  \frac{1}{2} m {v}^{2} }}

Substituting values of m & v in the equation:

\sf \implies KE =  \frac{1}{2}  \times 6.8 \times  {5}^{2}

\sf \implies KE = \frac{1}{ \cancel{2}}  \times  \cancel{2} \times 3.4 \times 25

\sf \implies KE =3.4 \times 25

\sf \implies KE = 85 \: J

8 0
4 years ago
Read 2 more answers
The distance traveled by a wave during a single period is
White raven [17]
I think it's wavelength
Hope I helped.
7 0
3 years ago
What primary element of light helps the observer see three-dimensions?
elixir [45]
<span>Shading. When light hits an opaque surface some is absorbed, the rest is reflected, The reflected light is called shading. Reflection is not simple and varies with material. The surface’s structure defines the details of reflection. Variations produce anything from bright specular reflection</span>
7 0
3 years ago
Read 2 more answers
Read the paragraph below and answer the question that follows:
elena-s [515]

B. Helium because it is constantly being made in the sun

Explanation:

From the given paragraph, we can conclude that helium is the most common element in a star such as the sun because it is constantly being made.

In the nuclear fusion process that results in the production of helium, hydrogen nuclei are the reactants and helium is the product.

  • since the reactants are constantly being used in the core of the sun, this suggests that the products must be more.
  • The reaction requires a high temperature and pressure to initiate.
  • It is a series of chain reaction that uses a fuel of hydrogen to produce helium.

learn more:

Transmutation brainly.com/question/3433940

#learnwithBrainly

8 0
3 years ago
Which is an example of transfroming potential energy to kinetic​
Rudik [331]

Answer:

A ball being dropped to the ground

6 0
3 years ago
Read 2 more answers
Other questions:
  • The general electron configuration for atoms of the halogen group is
    13·1 answer
  • What common laboratory measuring device will we likely always use in experiments that measure enthalpy changes?
    13·1 answer
  • Consider a uniform solid sphere of radius R and mass M rolling without slipping. Which form of its kinetic energy is larger, tra
    14·1 answer
  • A 4kg table pushed to the right with an applied force of 50N. The table has a net acceleration of 10 m/s^2 to the right. What is
    13·1 answer
  • Which is true of a step-down transformer but not a step-up transformer? The core is made of copper and the coils are made of iro
    11·2 answers
  • For a moving object, the force acting on the object varies directly with the objects acceleration. When a force of 24N acts on a
    11·1 answer
  • The furnace keeps houseAat 25◦C, while thefurnace in houseBkeeps it at 20◦C. Which house requires heat to be supplied by its fur
    7·1 answer
  • Where is the potential energy of a swing the greatest?
    7·2 answers
  • The international space station travels at a distance of about 250 miles above Earth’s surface and at a speed of 17,500 miles pe
    5·1 answer
  • 1. A listener stands 20.0 m from a speaker that pumps out music with a power output of 100.0 W.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!