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
nadezda [96]
3 years ago
14

Cylinder A is moving downward with a velocity of 3 m/s when the brake is suddenly applied to the drum. Knowing that the cylinder

moves 6 m downward before coming to rest and assuming uniformly accelerated motion, determine (a) the angular acceleration of the drum, (b) the time required for the cylinder to come to rest.
Physics
1 answer:
Xelga [282]3 years ago
7 0

Answer:

Incomplete question

Check attachment for the given diagram

Explanation:

Given that,

Initial Velocity of drum

u=3m/s

Distance travelled before coming to rest is 6m

Since it comes to rest, then, the final velocity is 0m/s

v=3m/s

Using equation of motion to calculate the linear acceleration or tangential acceleration

v²=u²+2as

0²=3²+2×a×6

0=9+12a

12a=-9

Then, a=-9/12

a=-0.75m/s²

The negative sign shows that the cylinder is decelerating.

Then, a=0.75m/s²

So, using the relationship between linear acceleration and angular acceleration.

a=αr

Where

a is linear acceleration

α is angular acceleration

And r is radius

α=a/r

From the diagram r=250mm=0.25m

Then,

α=0.75/0.25

α =3rad/sec²

The angular acceleration is =3rad/s²

b. Time take to come to rest

Using equation of motion

v=u+at

0=3-0.75t

0.75t=3

Then, t=3/0.75

t=4 secs

The time take to come to rest is 4s

You might be interested in
An upright spring with a 96g mass on it is compressed 2 cm. When
Alexeev081 [22]

Answer:

I only know answer A and it's 2825.28 N/m, with rounding it's 2825.5

Explanation:

Use the m*g*h=1/2*k*x^2 equation

96*9.81*60=1/2*k*2^2

5650.56=2k

5650.56/2=2825.28N/m

8 0
3 years ago
What do magnets never do?<br><br><br> This is science btw.
Anika [276]

Answer:

they..don't cook foood

8 0
2 years ago
Discuss velocity by providing at least one example and explain why velocity is either a scalar or vector quantity.
grandymaker [24]
Velocity is speed plus direction, so an example of velocity would be a vehicle traveling at 75mph north. Velocity is a vector quantity because it describes both magnitude and direction.
5 0
3 years ago
Read 2 more answers
True or false? 1:The pH scale measures the concentration of hydroxide ions.
lukranit [14]
That would be false hope this helps
6 0
3 years ago
Read 2 more answers
What is the relationship between distance and sound wave return time?
nekit [7.7K]
The time for the echo to return is directly proportional to the distance. vw = fλ. In a given medium under fixed conditions, vw is constant, so that there is a relationship between f and λ; the higher the frequency, the smaller the wavelength.
6 0
2 years ago
Other questions:
  • Can anyone explain the seasons of the earth?
    7·1 answer
  • The earth's hydrosphere includes which of the following?
    11·2 answers
  • Plz help i beg, veryyy confused :)
    15·1 answer
  • The density of a fish tank is 0.2fish over feet cubed. There are 8 fish in the tank. What is the volume of the tank?
    6·1 answer
  • In triangle​ ABC, the angles A and B have the same​ measure, while the measure of angle C is 21degrees larger than the measure o
    15·1 answer
  • During the new moon phase, why is the Moon not visible in the sky?
    7·1 answer
  • A football player running at two meters per second dives towards a football flying towards him with a velocity of five meters pe
    6·2 answers
  • What happens to the particles of an object when its temperature increases? *
    13·1 answer
  • If a 2 kg ball is moving at 6 m/s to the right and then hits a wall and bounces back at - 4 m/s (left), what is the change in mo
    12·1 answer
  • What is the acceleration of a train that takes 22 seconds to go from a speed of 73 kilometers per hour to a speed of 45 kilomete
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!