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
oksian1 [2.3K]
2 years ago
6

You stand on a merry-go-round which is spinning at f = 0.25 revolutions per second. You are R = 200 cm from the center. (a) Find

the angular speed ω at which it is spinning. (b) Find the centripetal acceleration, ac with which it is spinning. (c) What is the minimum coefficient of static friction µs between your shoes and the floor that will keep you from slipping off?
Physics
1 answer:
wariber [46]2 years ago
5 0

Answer:

a) ω = 9.86 rad/s

b) ac = 194. 4 m/s²

c) minimum coefficient of static friction, µs = 19.8

Explanation:

a) angular speed, ω = 2πf, where f is frequency of revolution

1 rps = 6.283 rad/s, π = 3.142

ω = 2 * 3.14 * 0.25 * 6.28

ω = 9.86 rad/s

b) centripetal acceleration, a = rω²

where r is radius in meters; r = 200 cm or 2 m

a = 2 * 9.86²

a = 194. 4 m/s²

c) µs = frictional force/ normal force

frictional force = centripetal force = ma; where a is centripetal acceleration

normal force = mg; where g = 9.8 m/s²

µs = ma/mg = a/g

µs = 194.4 ms⁻²/9.8 ms⁻²

c) minimum coefficient of static friction, µs = 19.8

You might be interested in
Given a force of 100 N and acceleration of 5 m/s2, what is the mass
tatyana61 [14]

Answer:

20 kg

Explanation:

remember the equation f=ma.

100 N=force

5 m/s2= acceleration

so you need to divide force by acceleration: 100 N/ 5 m/s2= 20 kg, to get the mass.

8 0
2 years ago
What is a list of solid mixtures in a classroom?
OLEGan [10]
Well,
1.} book
2.} computer
3.} desk
4.} chair
5.} pencil
6.} eraser
7.} dry erase board
8.} ruler
9.} calculator 
10.} TV 
and etc
6 0
3 years ago
Mga peymos d nang papallow back yan un follow ko na kayu mga bubu​
melisa1 [442]

Answer:

<h2> Ah Filipino ka rin?</h2>

Explanation:

<h2>Saya nmen</h2>
7 0
2 years ago
Read 2 more answers
During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a vel
zmey [24]

Answer:

Mass of receiver is 92 kg        

Explanation:

We have given mass of tackler m_1=100kg

Let the mass of receiver is m_2kg

When tackler moving alone velocity is v_i=4.8 m/sec

And when tackler and receiver is together velocity is v_f = 2.5 m/sec

So from conservation of momentum

m_1v_i=(m_1+m_2)v_f

100\times 4.8=(100+m_2)\times 2.5

2.5m_2+250=480

2.5m_2=230

m_2=92kg

So mass of receiver is 92 kg

4 0
3 years ago
Suppose a greenhouse is to be constructed to keep plants warm in the winter. Which material should be used for the windows of th
Anastasy [175]

Answer:

the answers, material D meets the requested characteristics

Explanation:

The objective of an insulating material for the house, must allow solar radiation to enter, so that the plants can perform photosynthesis and must prevent radiation from inside the house from being lost.

Therefore the material must meet two conditions be transparent to sunlight and be absorbed from the radiation coming from the house; this is to leave for visible light and absorb infrared radiation

Reviewing the answers, material D meets the requested characteristics

4 0
2 years ago
Other questions:
  • Which best describes why Keplers observation of planetary motion is a law instead of a theory
    14·2 answers
  • What is differnt between reactance and inped ance?
    13·1 answer
  • An​ airplane, flying horizontally at an altitude of 3 miles​, passes directly over an observer. If the constant speed of the air
    11·1 answer
  • Explain why theories may be changed or replaced overnight time.
    15·1 answer
  • An increase in temperature the kinetic energy and average speed of the gas particles. As a result, the pressure on the walls of
    8·1 answer
  • If a calibration curve of absorbance vs procaine hydrochloride concentration (mol L') is linear with the equation y = 240000x fo
    15·1 answer
  • As the temperature of a fluid decreases— A The number of inter-particle collisions decrease and random movement of particles inc
    5·2 answers
  • Through x rays is harmful for human health it is used in medical field why?
    9·1 answer
  • A transformer consists of a 500 turn primary coil and a 2000-turnsecondary coil. If the current in the secondary is 3.0A, what i
    15·1 answer
  • See the diagram above. Which of the following is the best prediction of what would happen if you increased the distance in secti
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!