Question

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Answer 1

Answer:

Option A 2 kg is correct

Explanation:

If the system is in equilibrium, the net downward pulling force should be equal on both sides

On taking components of 4 kg mass,

the downward pulling force is 4gsin30 = 2g

On the other side force = mg

2g= mg

m = 2

Answer 2

given that

hypoteneus = 4kg

perpendicular=m=?

sin30=perpendicular /hypo.

1/2=m/4

m=1/2/41/2×4/1

m=2kg