Laws Of Motion Question 240
Question: A rocket with a lift- off mass $ 3.5\times 10^{4} $
$ kg $ is blasted upwards with an initial acceleration of $ 10m/s^{2}. $ Then the initial thrust of the blast is[AIEEE 2003]
Options:
A) $ 1.75\times 10^{5}N $
B) $ 3.5\times 10^{5}N $
C) $ 7.0\times 10^{5}N $
D) $ 14.0\times 10^{5}N $
Show Answer
Answer:
Correct Answer: C
Solution:
Initial thrust must be $ m[g+a]=3.5\times 10^{4}(10+10)=7\times 10^{5}N $
