Question

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

• A. $595N$
• B. $675N$
• C. $456N$
• D. $925N$

Answer 1

The correct option is A $595N$

By balancing force
$859-F=ma$
$85\times 9.8-F=85\times 2.8$
$F=85\times (9.8-2.8)$
$=85\times 7.0$
$=85\times 7$
$=595N$.