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
egoroff_w [7]
3 years ago
6

A force of 45 N is applied tangentially to the rim of a solid disk of radius 0.12 m. The disk rotates about an axis through its

center and perpendicular to its face with a constant angular acceleration of 140 rad/s2. Determine the mass of the disk.
Physics
1 answer:
bearhunter [10]3 years ago
6 0

Answer:

Mass of the disk will be 2.976 kg

Explanation:

We have given force F = 45 N

Radius of the disk r = 0.12 m

Angular acceleration \alpha =140rad/sec^2

We know that torque \tau =I\alpha

And \tau =Fr

So Fr=I\alpha , here I is moment of inertia

So 50\times 0.12=I\times 140

I=0.0428kgm^2

We know that moment of inertia I=\frac{1}{2}mr^2

So 0.0428=\frac{1}{2}\times m\times 0.12^2

m = 2.976 kg

You might be interested in
Hydroelectric plants are used to produce electricity. Electric generators are used in such plants that are linked to water-wheel
svp [43]

Hydroelectric plants are used to produce electricity is the statement that best explains the relationship between energy and motion.

<h3>Explains the relationship between energy and motion in the process?</h3>

There is direct relationship between energy and motion in the process because if we increase the motion of the turbines, more electricity is produced in the generator and vice versa.

So we can conclude that the relationship between energy and motion in the process is directly proportional to each other.

Learn more about energy here: brainly.com/question/13881533

#SPJ1

5 0
2 years ago
A 10.0 g bullet moving at 300m/s is fired into a 1.00 kg block at rest. The bullet emerges (the bullet does not get embedded in
chubhunter [2.5K]

Answer:

v' = 1.5 m/s

Explanation:

given,

mass of the bullet, m = 10 g

initial speed of the bullet, v = 300 m/s

final speed of the bullet after collision, v' = 300/2 = 150 m/s

Mass of the block, M = 1 Kg

initial speed of the block, u = 0 m/s

velocity of the block after collision, u' = ?

using conservation of momentum

 m v + Mu = m v' + M u'

 0.01 x 300 + 0 = 0.01 x 150 + 1 x v'

v' = 0.01 x 150

v' = 1.5 m/s

Speed of the block after collision is equal to v' = 1.5 m/s

5 0
3 years ago
What is the relation between the weight of a body and acceleraton due to gravity?​
emmainna [20.7K]

Answer:

All objects on Earth, regardless of their mass, accelerate due to gravity at the same rate - that is, 9.8 m/sec2. The weight of an object can be calculated using the formula for force - F = m * a - where F equals the weight of the object and now the acceleration (a) is the acceleration of gravity (g).

6 0
2 years ago
Superconducting materials generate a strong ______ field. gravitational pressure magnetic nuclear
lisov135 [29]
Superconducting materials don't generate anything. 
But since their electrical resistance is zero, it's possible
to push a huge current through them without loss, and it's
the huge current that sets up a strong magnetic field around
the conductor.
8 0
3 years ago
Read 2 more answers
If the volume of a container increases, then the pressure will:
Elza [17]
d because the pressure particals won't have a small space to bump to
8 0
2 years ago
Other questions:
  • How tightly does mass need to be compacted in order to become a black hole??? (2 words)
    5·1 answer
  • ___________ is the process by which wind removes surface materials.
    15·2 answers
  • A person gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. The cart travels for
    8·1 answer
  • Pls help on this one?
    5·1 answer
  • Find the sine,cosine and tangent ratios​
    10·1 answer
  • I need help with this problem.
    13·1 answer
  • Nerve cells transmit electric signals through their long tubular axons. These signals propagate due to a sudden rush of Na+ ions
    5·1 answer
  • What structure help support plants
    12·2 answers
  • A rock on earth has a weight of 135 Newtons. What is its mass?
    8·1 answer
  • Why do you think spacecraft that carry instruments to collect data about objects in space are called probes?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!