Find acceleration of block B
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The acceleration of block B in the figure will be :
A . (4m1+m2)m2g.
B . (4m1+m2)2m2g.
C . (m1+4m2)2m1g.
D . (m1+m2)2m1g
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Answer:
Explanation:
treat block a and b as a system by subtracting unbalanced forces
F-T=m1a1+m2a2
F-T=2ma1+4ma2
by sum of change in length =0
2a1-3a2=0
2a1=3a2
a1=3a2/2
applying equation for 4m
3T=4ma2
T=4ma2/3
F-4ma2/3 = 2m(3a2/2)+4ma2
F-4ma2/3 =3ma2+4ma2
F=25ma2/3
3F/25m = a2
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