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
alexandr1967 [171]
3 years ago
14

A 2kg object is tied to the end of a cord and whirled in a horizontal circle of radius 2 m. If the body makes three complete rev

olutions every second,
what is its linear speed?

And what is its centripetal acceleration?
Physics
1 answer:
Travka [436]3 years ago
5 0

Answer:

a) 37.70 m/s

b)710.6 m/s²

Explanation:

Given that ;

Mass of object = 2 kg

Radius of the motion = 2m

Frequency of motion = 3 rev/s

The formula to apply is;

v= 2πrf   where v is linear speed

v = 2×π×2×3 =12π = 37.70 m/s

Centripetal acceleration is given as;

a= 4×π²×r×f²  

a= 4×π²×2×3²

a=710.6 m/s²

You might be interested in
Example of Newton’s law of universal gravitation…
insens350 [35]
The force that holds the gases in the sun. The force that causes a ball you throw in the air to come down again
4 0
3 years ago
Select the correct answer.
Bas_tet [7]
C light energy

The solar energy from the sun converts to chemical potential energy
5 0
3 years ago
Read 2 more answers
Fruits and vegetables should take up half you plate at a meal.<br> A. <br> True<br> B. <br> False
umka21 [38]

Answer:

A. true

Explanation:

3 0
2 years ago
Read 2 more answers
The speed that light travels :
OLga [1]
I think it might be C.
4 0
3 years ago
Read 2 more answers
When light passes from a faster medium into a slower medium, which of the following explains what will occur?
beks73 [17]

When light passes from a faster medium into a slower medium, light will be refracted toward a line drawn perpendicular to the point of refraction. <em>(B)</em>

5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the difference in energy between a beta particle at rest and one traveling 0.35c?
    6·1 answer
  • How many electrons must be removed from each of two 4.85-kg copper spheres to make the electric force of repulsion between them
    5·1 answer
  • Why are the hottest and coldest places on earth over land, not over water?
    11·1 answer
  • A cyclist travels 20km in 4hrs.What speed did the cyclist cycle at?​
    13·2 answers
  • What is an example of a partially movable joint?
    13·1 answer
  • The decibel level of the sound of a subway train was measured at 92 dB. Find the intensity in watts per square meter (W/m2). (Gi
    7·1 answer
  • 30. A force is exerted on a box and an equal and opposite force is exerted by
    11·1 answer
  • What is velocity ratio? It is impossible to get a perfect machine in practical life, why?<br>​
    11·1 answer
  • Which of the following is an example of a SOLUTION?
    5·1 answer
  • Think of an animal that has a distinctive or unusual body shapes. Describe how its body shape helps its momentum and how momentu
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!