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
tensa zangetsu [6.8K]
2 years ago
14

Two 2 kg masses is placed at either end of a rod that has a mass of .5 kg and a length of 3 m. What is the moment of inertia if

the system it is rotated about (a) one end of the rod and (b) the center of the rod?
Physics
1 answer:
sergij07 [2.7K]2 years ago
7 0

Explanation:

a) I=\displaystyle \sum_{i}m_ir_i^2

where r_i is the distance of the mass m_i from the axis of rotation. When the axis of rotation is placed at the end of the rod, the moment of inertia is due only to one mass. Therefore,

I= mr^2 = (2\:kg)(3\:m)^2 = 18\:kg-m^2

b) When the axis of rotation is placed on the center of the rod, the moment is due to both masses and the radius r is 1.5 m. Therefore,

\displaystyle I= \sum_{i}m_ir_i^2 = 2(2\:kg)(1.5\:m)^2 = 9\:kg-m^2

You might be interested in
What planet has an eleven hundred degree difference from one side to the other.
kirza4 [7]
The planet Mercury. Hope this helps
4 0
2 years ago
g a horizontal wheel of radius is rotating about a vertical axis. What is the magnitude of the resultant acceleration of a bug t
mihalych1998 [28]

Answer:

   a = w² r

Explanation:

In this exercise, indicate that the wheel has angular velocity w, the worm experiences the same angular velocity if it does not move, and has an acceleration towards the center of the circle, according to Newton's second law, called the centripetal acceleration.

           a = v² / r

angular and linear variables are related

           v = w r

we substitute

          a = w² r

where r is the radius of the wheel

4 0
3 years ago
A __________ provides a visual summary of the improvements that a data mining project provides on a binary classification proble
babymother [125]

Answer:

Option (B)

Explanation:

A lift chart usually refers to a graphical representation that is mainly used in order to improve the drawbacks of a mining model by making a comparison with any random guess, and also helps in determining the changes that occur in terms of lift scores.

It describes the binary classification of the problems associated with the mining activity. This type of chart is commonly used to differentiate the lift scores for a variety of models, and picking the best one out of all.

Thus, the correct answer is option (B).

5 0
3 years ago
Please help, thanks!
statuscvo [17]
Because it demonstrates the relationship between a body and the forces acting upon it, and its motion in response to those forces. [Hope that helps]
7 0
2 years ago
If a hypothesis is falsifiable, _____.
san4es73 [151]

Answer:

it must be possible to prove it wrong

Explanation:

4 0
2 years ago
Read 2 more answers
Other questions:
  • A 1500-kg car locks its brakes and skids to a stop on a slippery horizontal road, leaving skid marks that are 15 m long. How muc
    5·1 answer
  • A car travels 40 miles in 30 min. Calculate the car's average speed in mi/hr.
    9·2 answers
  • Motion can be detected by using background objects that are not moving called_______________ points
    15·1 answer
  • A 2 kg object is given a displacement ∆~s = (5 m)ˆı + (3 m) ˆ + (−4 m) ˆk along a straight line. During the displacement, a con
    14·1 answer
  • How long does it take for light from the sun to reach earth
    11·2 answers
  • A car goes 152 miles in 2 hours and 5 minutes. Calculate the car’s speed in units of m/s. 1 mi = 1600 m.
    11·2 answers
  • An experiment that produces waves on a string is analyzed, and the experimental value for the wave speed is found to be 66 m/s.
    16·2 answers
  • A 15kg object strikes the ground with 2000J of kinetic energy after freely falling from rest. How far above the ground was the o
    8·1 answer
  • Which is the correct procedure to determine the daily mean temperature?.
    15·1 answer
  • What angle (in degrees) is needed between the direction of polarized light and the axis of a polarizing filter to cut its intens
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!