16. If all the surfaces are frictionless and pulleys and
strings are ideal, then the value of T1-T2 is (where
T1 and T2 are the tension in the strings)
(1) 2 N
(3) 6N
(2) 4 N
(4) 8N
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Answer:2N
Explanation:
T-m1g=m1a
M2g-T=m2a
T-T cancelled
There for m2g-m1g=(m1a+m2a)
a=g(m2-m1) ÷m1+m2
a=10(12-8) ÷8+12
a=40÷20
a=2
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