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
Oksi-84 [34.3K]
3 years ago
6

A small metallic bob is suspended from the ceiling by a thread of negligible mass. The ball is then set in motion in a horizonta

l circle so that the thread describes a cone. Calculate the magnitude of the angular momentum of the bob about a vertical axis through the supporting point. The acceleration of gravity is 9.8 m/s2. Answer in units of kg · m2/s
Physics
1 answer:
shusha [124]3 years ago
8 0

Answer:

19.99 kg m²/s

Explanation:

Angular Momentum (L) is defined as the product of the moment of Inertia (I) and angular velocity (w)

L = m r × v.

r and  v are perpendicular to each other,

where r = lsinθ.

l = 2.4 m

θ= 34°

g = 9.8 m/s²  and m = 5 kg

resolving using newtons second law in the vertical and horizontal components.

T cos θ − m g = 0

T sin θ − mw² lsin θ = 0

where T is the force with which the wire acts on the bob

w = √g / lcosθ

= √ 9.8 / 2.4 ×cos 34

= 2.2193 rad/s

the angular momentum  L = mr× v

= mw (lsin θ)²

= 5 × 2.2193 (2.4 ×sin 34°)²

=19.99 kg m²/s

You might be interested in
Using a schematic diagram, explain the steps of the laser technique.
nignag [31]

The steps of the use of the laser technique is explained below:

  • A laser beam is emitted from the diode in the unit and spread into a laser plane (1).
  • The laser plane, appearing as a line on the sphere (2), is reflected and collected by dual CCD arrays (1).
  • The resulting 2D profile is digitized and as the unit travels along the x-axis of the object, multiple profiles are collected yielding a 3D coordinate point cloud of the surface (3).

<h3>What is a Laser Technique?</h3>

This refers to the type of surgery that makes use of special light beams in order to cut open the human body in a surgical procedure.

Hence, we can see that the laser technique is considered safer than conventional surgical methods.

Laser techniques include:

  • laser vaporization,
  • laser resection-enucleation,  
  • coagulation.

Read more about laser technique here:

brainly.com/question/14091177

#SPJ1

3 0
2 years ago
A few alpha particles bounce off a thin sheet of gold foil. What did scientists
Vilka [71]

Answer:

I world say A is the answer 80% sure

7 0
2 years ago
A 10kg box accelerates forward at a rate of 12 m/s^2. What is the force acting on the box?
Allushta [10]

Answer:

120N

Explanation:

Newton's second law formula: F= ma

given that m = 10 kg, a = 12 m/s^2

F = ma = 10 kg * 12 m/s^2 = 120 kgm/s^2 = 120 N

5 0
2 years ago
La velocidad de la luz en el vacío es c= 3000.000 km\s la luz del sol tarda en llegar a la tierra 8 minutos y 14 segundos
ehidna [41]

La velocidad correcta de la luz en el vacío es  300.000 km/s .

La distancia = (velocidad) x (duración de tiempo)

Duración de tiempo = 494 segundos, porque cada minuto = 60 segundos

La distancia = (300.000 km/s) x (494 s)

<em>La distancia = 148.200.000 km</em>

3 0
3 years ago
It’s upside down, I know.
Paladinen [302]
Where's the question?
3 0
3 years ago
Other questions:
  • A device for increasing or decreasing voltage through electromagnetic induction.
    13·1 answer
  • The vertical deflecting plates of a typical classroom oscilloscope are a pair of parallel square metal plates carrying equal but
    5·1 answer
  • 3. An automobile accelerates 1.77 m/sover 6.00 s to reach the freeway speed at
    9·1 answer
  • NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. A 60-kg pilot flies
    11·1 answer
  • .<br> What is the mass number of the isotope lithium-7?
    6·2 answers
  • Which quantity vector is a vector quantity
    11·1 answer
  • A gas fills the right portion of a horizontal cylinder whose radius is 5.33 cm. The initial pressure of the gas is 2.29 x 105 Pa
    6·1 answer
  • When dropping a grape and a bowling ball from a height, the force of gravity would be identical on each object. True or False
    9·2 answers
  • What is the relationship between frictional force and the normal force
    5·1 answer
  • Chapter Name :- Vector
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!