Laws Of Motion Question 430
Question: A balloon with mass M is descending down with an acceleration a (a < g). What mass’ of its contents must be removed so that it starts moving up with same acceleration a
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: D
Solution:
[d]
Up thrust F will remain same in both the cases.
Equations of motion be:
and
solving equations (1) and (2) we get, mass to be removed
