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
goldenfox [79]
3 years ago
10

A rock is suspended from a string, and it accelerates downward. Which one of the following statements is correct? Group of answe

r choices
a. The magnitude of the tension in the string is greater than the magnitude of the weight of the rock.
b. The magnitude of the tension in the string is independent of the magnitude of the rock's acceleration..
c. The magnitude of the tension in the string is equal to the magnitude of the weight of the rock.
d. The string pushes downward on the rock.
e. The magnitude of the tension in the string is less than the magnitude of the weight of the rock.
Physics
1 answer:
Tems11 [23]3 years ago
4 0

Answer:

a. The magnitude of the tension in the string is greater than the magnitude of the weight of the rock.

Explanation:

During the motion of the rock while it is in downward motion we can say

T - mg cos\theta = ma_c

since it is performing circular motion so we will have its acceleration towards its center

T = mgcos\theta + ma_c

a_c = \frac{v^2}{L}

T = mgcos\theta + \frac{mv^2}{L}

So at the lowest point of the path we can say

T = mg + \frac{mv^2}{L}

so correct answer is

a. The magnitude of the tension in the string is greater than the magnitude of the weight of the rock.

You might be interested in
What will sunshine help produce in the body?
andreev551 [17]
Sunshine will help prode vitamin C
4 0
4 years ago
Which formula represents final velocity of an object with average acceleration?
zheka24 [161]

Answer:

The equation v – = v 0 + v 2 v – = v 0 + v 2 is reflects the fact that when acceleration is constant, v – is just the simple average of the initial and final velocities.

Explanation:

hope this is it

5 0
2 years ago
Read 2 more answers
Why is the spectrum of a star called an absorption spectrum?
ladessa [460]
It is called absorption spectrum because a gas of hydrogen will make a line spectrum and if viewed for another angle it would be between a continuum light and a emission line spectrum
6 0
4 years ago
Which of these factors will increase the speed of a sound wave in air?
Artemon [7]
<h3>Answer;</h3>

-Temperature

<h3><u>Explanation;</u></h3>
  • Sound is a type of mechanical wave, which means it requires a material medium for transmission. It results from the vibration of particles.
  • The speed of sound in mediums varies depending on the property of the medium and a number of other factors which includes; temperature, pressure,  and humidity.
  • Temperature increases the speed of sound wave as particles at higher temperatures tend to possess more energy and thus they will vibrate faster and thus the sound wave will travel faster.
3 0
3 years ago
Which of the following statements best describes how waves interact with the media in which they move?
Leni [432]

Answer:

d

Explanation:

7 0
4 years ago
Other questions:
  • Calculate the displacement of a car waxing point of 11 m to the final positions of 4 meters
    5·1 answer
  • Please select the word from the list that best fits the definition the name for continents in one landmass surrounded by giganti
    8·1 answer
  • An astronaut is floating in space. There is no rope connecting him to the ship. They have some tools and a
    7·1 answer
  • A radioactive sample has a count rate of 800 counts per minute. One hour later, the count rate has fallen to 100 counts per minu
    11·1 answer
  • Expresa en terminos de la unidad fundamental
    6·1 answer
  • Which is a form of energy that can move from a hot place to a cooler place, or the transfer of energy from one body to another?
    14·1 answer
  • What year did Badminton become a full-medal Olympic sport?
    6·1 answer
  • How might being too strong actually restrict a joints range of motion
    13·1 answer
  • The releasing of an object from certain height to ground due to gravity is called____ A, Free falling B, Projectile C, curved li
    7·1 answer
  • Suppose that a simple pendulum consists of a small 60.0 g bob at the end of a cord of negligible mass. If the angle 0 between th
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!