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
ElenaW [278]
3 years ago
6

A lawn roller in the form of a thin-walled, hollow cylinder with mass M is pulled horizontally with a constant horizontal force

F applied by a handle attached to the axle. If it rolls without slipping, find the acceleration and the friction force.
Physics
1 answer:
olga nikolaevna [1]3 years ago
6 0

Answer:

a_{cm}=\frac{F}{2M}\\\\F_{fr}=\frac{F}{2}

Explanation:

Given the mass as M, the rotational inertia of the mower is;

I_{cm}=MR^2

-The roller doesn't slip while rolling;

v_{cm}=wR, a_{cm}=\alpha R

\sum F_x=Ma_x, -F+F_{fr}=-Ma_{cm}\\\\a_{cm}=\frac{F-Fr}{M}    \ \ \ \ \ \ \ \ eqtn1\\\\\sum \tau_{cm}=I_{cm}\alpha, F_{fr}(R)}=(MR^2)(\frac{a_{cm}}{R}), ->F_{fr}=Ma_c_m\ \ \  \ \ \ \ eqtn2\\\\a_{cm}=\frac{F-Ma_{cm}}{M}, ->F=2Ma_{cm}\\\\a_{cm}=\frac{F}{2M}\\\\\\\therefore F_{fr}=M(\frac{F}{2M})\\\\F_{fr}=\frac{F}{2}

You might be interested in
What is the potential energy of a puppy that weighs 18 N istting in a high chair 2 m high?
kykrilka [37]

Answer:

Potential energy =mass* acceleration due to gravity * height

mass*acceleration due to gravity =weight

hence potential energy of the puppy= weight * height

=18*2

=36 joule

6 0
3 years ago
A fish scale, consisting of a spring with spring constant k=200N/m, is hung vertically from the ceiling. A 2.6 kg fish is attach
Olegator [25]

Answer:

Explanation:

The fish is initially at rest and it is also at rest when the spring is fully stretched at the maximum distance.

Change in gravity potential energy = change in spring potential energy

mgh = 1/2kh^2

Assume gravity constant g is 10m/s^2

2.6*10*h = 1/2*200*h^2

100h^2 - 26h = 0

2h(50h - 13) = 0

h = 0 or h = 13/50 = 0.65m

h = 0 is before the spring is stretched

So the maximum distance is 0.65m.

3 0
2 years ago
Read 2 more answers
Matter comprises all of them and among them are independent. what are they
telo118 [61]

<em>Matter is composed of elementary particles i.e. quarks and leptons.</em>

<em>Matter is composed of elementary particles i.e. quarks and leptons.Matter is composed of elementary particles which is called quarks and leptons. Quarks consist of protons, neutrons and electrons. All observable matter is made up of up quarks, down quarks and electrons.</em>

<em>Matter is composed of elementary particles i.e. quarks and leptons.Matter is composed of elementary particles which is called quarks and leptons. Quarks consist of protons, neutrons and electrons. All observable matter is made up of up quarks, down quarks and electrons.Lepton is an elementary particle consist of half-integer spin that does not undergo strong interactions. Leptons exist on two main classes i.e. charged leptons, and neutral leptons. Electron, electron neutrino, muon, muon neutrino, tau and tau neutrino are the six types of leptons.</em>

8 0
3 years ago
What is -0.000000698 in scientific notation
dangina [55]

-6.98 × 10-^7 is the answer <3

6 0
3 years ago
Give two reasons why hydroelectricity could be better alternative of biofuel in the context of our country.​
Semmy [17]

Answer:

Hydroelectricity is a renewable energy source.

Hydroelectricity increases the stability and reliability of electricity system

Hydroelectricity helps fight climate changes.

Explanation:

If we use hydroelectricity our country would be in good climate and not a bad one. And the best facts it is renewable.

3 0
2 years ago
Other questions:
  • If a 10 meter ramp helps you move a 500 kg object up 1 meter. What was the mechanical advantage of the ramp?
    5·1 answer
  • A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on the moon. there is no air on the moon
    8·2 answers
  • What is the capital of sweden?
    12·2 answers
  • When tension is applied to a metal wire of length L , it stretches by Δ L . If the same tension is applied to a metal wire of th
    11·2 answers
  • A series RLC circuit has a resistance of 57.61 W, a capacitance of 13.13 mF, and an inductance of 196.03 mH. The circuit is conn
    8·1 answer
  • What is a travelling wave and a standing wave? What are the differences between both of them?
    13·2 answers
  • A steel ball of mass 0.1 kg falls from a height of 1.8metres
    9·1 answer
  • Jet aircraft maintenance crews are required to wear protective earplugs. Members of a particular crew wear earplugs that reduce
    13·1 answer
  • 1. The first stage of stellar formation is the assembly (or formation) of a_______ . 2. Stars form in clouds. 3. When a cloud co
    9·1 answer
  • What tool would you use for Volume
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!