Questions
In the figure shown if mass of each block is m. Find the acceleration of block A.
(use g=10 m/s2)
a
2 m/s2
b
4 m/s2
c
1 m/s2
d
5 m/s2
detailed solution
Correct option is B
Let acc. of block A be aA and acc. of block B be aB. Hence2T=maA--(1)andmg−4T=maB---(2)Constrained Motion : 2TaA=4TaB∵T∝1a⇒aA=2aBAfter solving we get, from 2×1 and 2⇒2 2T=maA⇒4T=2maA ⇒mg−4T=maA2on solving we get ⇒mg= 5maA2⇒aA=4ms−2Talk to our academic expert!
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