Question

wo blocks of mass 10 kg and 20 kg are connected by a light string as shown in the figure. If two forces of 80 N and 20 N are exerted on the system, the net acceleration of 10 kg mass will be 1 m/s2 2 m/s2 0.5 m/s2 3 m/s2

Answer 1

Answer:

correct answer is option 4 , a = 3 m/s2

Explanation:

total mass = 10+20 = 30 kg

total force of the system = 80+20 = 100(if they act in same direction otherwise subtract it)

we know that

F = ma

a = F / m = 100/30

a= 3.333 = 3 m/s2

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