A parachute of mass m starts coming down with a constant acceleration a. Determine the ballast mass to be released for the parachute to have an upward acceleration of same magnitude. Neglect air drag.
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
If T is the upward thrust on parachute, then
ma = mg – T ……… (i)
Let m' be the mass to be released, then
T – (m – m') g = (m – m') a ………. (ii)
Adding (i) and (ii)
m'g = 2ma - m'
or m' = 
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