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AveGali [126]
3 years ago
15

A 3 Kg ball at the end of a string is spun in a circle. If the length of the string is 2 m and the velocity of the ball is 6 m/s

, what is the centripetal acceleration of the ball? What is the centripetal force on the ball?
Physics
1 answer:
gulaghasi [49]3 years ago
3 0
M is 3kg
r is 2m
v is 6m/s

Fc = mv^2 / r
Fc = (3x6^2)/2 =54

a = v^2/r
a = 6^2 /2 = 18
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Explanation:

Given that,

Charge 1, q_1=-5.45\times 10^{-6}\ C

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1. The electric force is given by :

F=k\dfrac{q_1q_2}{r^2}

F=9\times 10^9\times \dfrac{-5.45\times 10^{-6}\times 4.39\times 10^{-6}}{(0.0209)^2}

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2. Distance between two identical charges, r=0.0209\ m

Electric force is given by :

F=\dfrac{kq_3^2}{r^2}

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3 years ago
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sertanlavr [38]

Answer:

There is no mechanical advantage

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For example, is we have a mechanical advantage of 2, the force needed to lift will be 1/2 of the weight of the load, and if we have a mechanical advantage of 4, the force needed will be 1/4 of the weight of the load.

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then we have:

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The radius of a record player is really variable, it is around 10 inches, so i will use r = 10in, which is the rotating part of the record player.

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stiks02 [169]

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