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Acceleration

Two masses ...

Question

Two masses $m_{1} = 5 k g$ and $m_{2} = 4.8 k g$ tied to a string are hanging over a light frictionless pulley. What is the acceleration of the masses when lift is free to move?

A

0.2 m s^{- 2}

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B

4.8 m s^{- 2}

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C

5 m s^{- 2}

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D

9.8 m s^{- 2}

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Solution

The correct option is A $0.2 m s^{- 2}$
$a_{s y s t} = \frac{F_{n e t}}{T o t a l m a s s} = \frac{(5 - 4.8) g}{9.8} = 0.2 ㎨$

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