Laws of MotionHard
Question
In the arrangement shown in the figure all surfaces are frictionless, pulley and string are light. The masses of the block are m1 = 20 kg and m2 = 30 kg. The accelerations of masses m1 and m2 will be if F = 180 N is applied according to figure.
Options
A.am1 = 9m/s2, am2 = 0
B.am1 = 9m/s2, am2 = 9m/s2
C.am1 = 0, am2 = 9m/s2
D.None of these
Solution
F = m1a1 [Newton′s II law for m1]
180 = 20 a1
⇒ a1 = 9 m/s2
Net force on m2 is 0 therefore acceleration of m2 is 0.
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