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Apparent Weight

An 80 kg pe...

Question

An $80 k g$ person is parachuting and is experiencing a downward acceleration of $2.8 m / s^{2}$ . The mass of the parachute is $5 k g$ . Find the upward force on the open parachute is: (Take $g = 9.8 m / s^{2})$ /

595 N

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675 N

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456 N

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925 N

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Solution

The correct option is A $595 N$
By balancing force
$859 - F = m a$
$85 \times 9.8 - F = 85 \times 2.8$
$F = 85 \times (9.8 - 2.8)$
$= 85 \times 7.0$
$= 85 \times 7$
$= 595 N$ .

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