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seropon [69]
2 years ago
5

Using the information from the previous problem (A 2kg ball rotates on the end of a 1.4m long string. The ball makes 5 revolutio

ns in 4.4s.), calculate the centripetal force on the ball.
Group of answer choices

A) 140.9N

B) 1.1N

C) 110.4N

D) 5.7N
Physics
1 answer:
valina [46]2 years ago
6 0

The centripetal force on the ball is 140.9 N; option A

<h3>What is the centripetal force on the ball?</h3>

The centripetal force on the ball is given by the formula below:

  • F = mv²/r

where;

  • m is mass
  • v is linear velocity
  • r is radius

The linear velocity, v = wr

v = 5 * 2π/4.4 * 1.4 = 9.93 m/s

F = 10² * 2/1.4 = 140.9 N

In conclusion, the centripetal force is derived from the mass, velocity and radius of the path.

Learn more about centripetal force at: brainly.com/question/20905151

#SPJ1

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Explanation:

An object is said to be in uniform circular motion when it is moving at a constant speed in a circular path.

The acceleration of an object in uniform circular motion is called centripetal acceleration, and it is given by

a=\frac{v^2}{r}

where

v is the speed of the object

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In the problem, the original centripetal acceleration is

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We notice that the centripetal acceleration is proportional to the square of the speed and inversely proportional to the radius, so we can do as follows:

- We can double the speed:

v' = 2v

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a'=\frac{(2v)^2}{r}=4(\frac{v^2}{r})=4a

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- We can decrease the radius to 1/4 of its original value:

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Learn more about centripetal acceleration:

brainly.com/question/2562955

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q=e=charge of electron

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R=\frac{m*\sqrt{\frac{2*e*V}{m} } }{e B}

B=\sqrt{\frac{2*m*V}{e*R^{2} } }

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