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Question

A 13N weight and a 12N weight are connected by massless string over a mass less friction less pulley, The 13N weight has a downward acceleration with magnitude equal to that of a freely falling body time

A
1
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B
1/12
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C
1/13
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D
1/25
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Solution

The correct option is D 1/25

For 13N mass =m1a=13T

for 12N mass=m2a=T12

Also

m1=13gwhereisacclerationoffreelyfallingbody.andm2=12gEllminatingT,(m1+m2)=1312(13g+12g)a=1a=g25


1233778_1365844_ans_3669f581d20644c88b3d58bc50ad0fc6.JPG

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