Laws of MotionEasy
Question
An 80 kg person is parachuting and is experiencing a downward acceleration of 2.8m / s2. The mass of the parachute is 5kg. The upward force on the open parachute is (Take g = 9.8 m / s2.)
Options
A.595N
B.615N
C.456N
D.925N
Solution
The net upward acceleration is (9.8 - 2.8) = 7m/sec2
Total mass = 80 + 5 = 85kg
So, net upward force is F = 85 × 7 = 595N
Total mass = 80 + 5 = 85kg
So, net upward force is F = 85 × 7 = 595N
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