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
disa [49]
3 years ago
6

A ball of mass 5 kg attached to a string is swung in a horizontal circle of radius 0.5 m. If the tension in the string is 10 N,

the work done by the tension in one revolution is _____________ J.
Physics
1 answer:
kirill115 [55]3 years ago
8 0

Answer:

0 J

Explanation:

given,

mass of the ball = 5 kg

radius of the horizontal circle = 0.5 m

tension in the string = 10 N

Work done = ?

Work done by the tension in the circular path will be equal to zero.

This is because body moves in circular path, the centripetal force act along the radius of the circle and motion is right angle to the tension on the string.

so, work done = F s cos θ

     θ = 90°,

work done = F s cos 90°        ∵ cos 90° = 0

Work done = 0 J

You might be interested in
9. Using these words explain how matter and energy interact when waves are generated. Disturbance ______________________________
ohaa [14]

Answer:

A wave is a disturbance of the space (or of a medium), that carries energy without transmitting matter.

A wave is produced when there is a periodic vibration in the particles of a medium (mechanical wave), or when there is a periodic oscillation of the electric and magnetic fields (electromagnetic waves). Electromagnetic waves are the only ones that can travel through a vacuum.

Mechanical waves are further classified into two types, depending on how the particles in the medium vibrate:

- If they vibrate up and down (perpendicular to the direction of motion of the wave), they are called transverse waves

- If they vibrate back and forth (parallel to the direction of motion of the wave), they are called longitudinal waves

In general, waves are generated from a precise point in the space, which is called source of the wave. The source of the wave does work, since it is responsible for starting the motion of the particle, and make them starting vibrating, so it transmits energy to the particles.

7 0
3 years ago
What is rotation and revolution
skad [1K]
When an object turns around an internal axis (like the Earth turns around its axis) it is called a rotation. When an object circles an external axis (like the Earth circles the sun) it is called a revolution.
5 0
3 years ago
A private aviation helicopter's main rotor blades rotate at approximately
Arisa [49]

Answer: 7.5 rev/s

Explanation:

We are given the angular velocity \omega a helicopter's main rotor blades:

\omega=450 rpm=450 \frac{rev}{min}

However, we are asked to express this \omega in the International Systrm (SI) units. In this sense, the SI unit for time is second (s):

\omega=450 \frac{rev}{min} \frac{1 min}{60 s}

\omega=7.5 \frac{rev}{s}

4 0
3 years ago
About light and energy
Sophie [7]
E = MC^2. Albert Einstein's proven formula. When mass travels at the square of speed of light, the mass gets converted into energy
7 0
3 years ago
Which characteristic must a food have to receive a “natural” label from the FDA ?
adelina 88 [10]
No artificial ingredients
i only know that because my mom was vegan for two years
4 0
3 years ago
Other questions:
  • Tina and her puppy are tugging on a rope, each pulling on opposite ends.
    13·2 answers
  • You have a pure (24-karat) gold ring with mass Gold has an atomic mass of and an atomic number of 79. (a) How many protons are i
    14·1 answer
  • If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wi
    9·1 answer
  • The spring, initially at rest, was compressed by the blue box by 0.15 m. The spring constant of the spring is 300 N/m. The mass
    14·1 answer
  • As a substance condenses, its temperature does not change. How does the potential energy of the molecules of the substance chang
    12·1 answer
  • I need help!!! What is the answer!!
    8·1 answer
  • A 1.0 kg toy car is released at the top of a frictionless track on the left and rolls off of the track from its right
    6·2 answers
  • What type of diagrams are used to present the conditions that are available to control outputs based on inputs?
    14·2 answers
  • Do allergen-free pillows cause fewer germs to grow?
    14·2 answers
  • The speed that a tsunami can travel is modeled by the equation , where s is the speed in kilometers per hour and d is the averag
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!