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
FromTheMoon [43]
3 years ago
7

A child whirls a 3.00 kg ball on a string .50 m from the axis of rotation in a horizontal circle. The ball makes 1 revolution in

1.0 s. a) What is the centripetal acceleration of the ball? b) What is the tension in the string?
Physics
1 answer:
melamori03 [73]3 years ago
7 0

Answers:

a) 0.5 m/s^{2}

b) 1.5 N

Explanation:

a) The centripetal acceleration a_{c} of an object moving in a uniform circular motion is given by the following equation:  

a_{c}=\omega^{2} r  

Where:

\omega=1 \frac{rev}{s} is the angular velocity of the ball

r=0.5 m is the radius of the circular motion, which is equal to the length of the string

Then:

a_{c}=(1 \frac{rev}{s})^{2} 0.5 m  

a_{c}=0.5 m/s^{2} This is the centripetal acceleration of the ball

b) On the other hand, in this circular motion there is a force (centripetal force F) that is directed towards the center and is equal to the tension (T) in the string:

F=T=m. a_{c}

Where m=3 kg is the mass of the ball

Hence:

T=(3 kg)(0.5 m/s^{2})

T=1.5 N This is the tension in the string

You might be interested in
What is the momentum of an object that is moving in a straight line at a speed of 10 m/s and has a mass of 10 kilograms?
Aleksandr-060686 [28]
The momentum of an object is given by the product between its mass and its velocity:
p=mv
where m is the mass and v the velocity.

For the object in our problem, m=10 kg and v=10 m/s, therefore its momentum is
p=mv=(10 kg)(10 m/s)=100 kg m/s
So, the correct answer is B).
8 0
3 years ago
Definition for compression and rarefraction
s344n2d4d5 [400]
Compression and rarefaction are two phenomenon occurs in longitudunal wave!

when there is denser particle gathering in that wave , there we called it compression and the rarer part of particles is rarefaction !
6 0
3 years ago
Read 2 more answers
The peak intensity of radiation from a star named sigma is 2 x 10^6 mmkay. What is the average surface temperature of Sigma roun
Igoryamba

Answer:

1.45 K

I had the same question and i got it right.

8 0
3 years ago
Read 2 more answers
Yall think aliens real? for me no, because people been trying to search for them through telescopes and stuff for years. but sti
Vsevolod [243]

Answer:

Personally I don't believe aliens exist maybe they do who knows but i don't think so.

Explanation:

7 0
2 years ago
Read 2 more answers
Let's examine over the next few questions an NFL kick as described in the 3rd Law video. The announcer claimed that the ball is
hichkok12 [17]

Answer:

8451.62109367671 Newtons

Explanation:

1\ kg=1\times 9.8066500286389=9.8066500286389\ N

1 \lb=2.2046226218488\ kg

It is known that

1\ lbs=\dfrac{9.8066500286389}{2.2046226218488}=4.4482216282508\ N

So,

1900\ lbs=1900\times 4.4482216282508\\\Rightarrow 1900\ lbs=8451.6210936765\ N

The force in Newtons is 8451.6210936765 Newtons

4 0
3 years ago
Other questions:
  • What are two parts that make up a vector
    13·1 answer
  • 3. Tyrone wants to determine how fast a bowling ball travels when it is bowled. He uses a stopwatch to
    9·1 answer
  • A 50 mL graduated cylinder contains 25.0 mL of water. A 42.5040 g piece of gold is placed in the graduated cylinder and the wate
    6·1 answer
  • This is a form of energy representing the motion of the molecules which make up an object. A. Thermal Energy B. Kinetic Energy C
    13·1 answer
  • How long is a WiFi wavelength?<br><br> A) 10 cm<br><br> B) 12 cm<br><br> C) 15 cm <br><br> D) 20cm
    12·2 answers
  • Why can a liquid take the shape of the bottom of its container?
    14·2 answers
  • Macro shots of flowers will typically have a shallow depth of field. True or False?
    14·2 answers
  • A boxer punches a sheet of paper in midair and brings it from rest up to a speed of 30 m/s in 0.060 s .
    8·1 answer
  • A 1 kg particle moves upward from the origin to (23) m. Wit is work done by the force of gravity which is in - y direction s B.
    12·1 answer
  • The decay of uranium isotopes is used to provide what information about Earths history?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!