a person holds a 180g block that is connected to a 340g block by a string going

Question

a person holds a 180g block that is connected to a 340g block by a string going over a light pulley with no friction in the bearing. after the person releases the 180g block, it starts moving upward and the heavier block descends. what is the force that the string exerts on each block, express answer in two significant figures. a person holds a 180g block that is connected to a 340g block by a string going over a light pulley with no friction in the bearing. after the person releases the 180g block, it starts moving upward and the heavier block descends. what is the force that the string exerts on each block, express answer in two significant figures. a person holds a 180g block that is connected to a 340g block by a string going over a light pulley with no friction in the bearing. after the person releases the 180g block, it starts moving upward and the heavier block descends. what is the force that the string exerts on each block, express answer in two significant figures.

Explanation / Answer

Let m1=0.34 kg, m2=0.18 kg

Also let T and a are tension and acceleration for both the masses as pulley is light pully.

Now, m1g - T =m1a ..................(1)

and T -m2g = m2a...................(2)

adding (1) and (2) (m1-m2)g=(m1+m2)a

a=  (m1-m2)g/(m1+m2)

=(0.34-0.18)*g/(0.34+0.18) =0.308g

Putting a in (2), T= m2(g+a) = 0.34(1.308g) =4.36 N

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