Laws of MotionHard
Question
In the arrangement show in figure, pulley is smooth and mass less and all the strings are light. let F1 be the force exerted on the pulley in case (i) and F2 the force in case (ii). then
Options
A.F1 > F2
B.F1 < F2
C.F1 = F2
D.F1 = 2F2
Solution
Case (ii) : F1 = 2T1
a1 =
∴ T1 = 2mg = 2m ×
⇒ T1 =
Case (ii) : F2 = 2T2
a2 =
∴ 4mg - T2 = ×
T2 =
∴ F2 = 2T2 = 
a1 =
∴ T1 = 2mg = 2m ×
⇒ T1 =
Case (ii) : F2 = 2T2
a2 =
∴ 4mg - T2 = ×
T2 =
∴ F2 = 2T2 = Create a free account to view solution
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