2 years ago

Question 8

Physics

1 answer:

FinnZ [79.3K]2 years ago

8 0

Answer:

A hope this helps

Explanation:

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ANSWER

C. $F=4.5 \times10^3$ . newtons

EXPLANATION

According to Newton's second law,

$F_{net}=ma$ , where

$m=1.00\times 10^3kg$ is the mass measured in kilograms.

and

$a=4.5ms^{2}$ is the acceleration in metres per second square.

We substitute these values to obtain,

$F=1.00\times10^3 \times 4.5$ .

We rearrange to get,

$F=1.00\times4.5 \times10^3$ .

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The correct answer is C

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A 3.00-kg mass rests on the ground. It is attached to a string which goes vertically to and over an ideal pulley. A second mass

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Answer:A

Explanation:

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distance moved=50 cm

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$T-mg=ma$

Let M be the other mass

$Mg-T=Ma$

$T=M(g-a)$

$M=m\frac{g+a}{g-a}$

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$M=3\times 1.227$

$M=3.67 kg$

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