Laws Of Motion Question 157

Question: Three blocks of masses m1,m2 and m3 are connected by massless strings as shown on a frictionless table. They are pulled with a force T3=40N . If m1=10kg,m2=6kg and m3=4kg , the tension T2 will be [MP PMT/PET 1998]

Options:

A) 20 N

B) 40 N

C) 10 N

D) 32 N

Show Answer

Answer:

Correct Answer: D

Solution:

T2=(m1+m2)×T3m1+m2+m3=(10+6)×4020

=32 N

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