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Figure shows two blocks, each of mass 2k...

Figure shows two blocks, each of mass 2kg, connected by a string passing over two pulleys. One block rests on a smooth horizontal surface and the other blockhangs vertically. Assume pullyes to be frictionless and massless. What is the tension in the string?

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From the free-body diagram of vertically hanging 2 kg block,
`2g - T=2a`...... (i)
considering the 2 kg block on the horizontal surface .
`T=2a`............ (ii)
combining (i) and (ii)
` 2g -T=T or 2T = 2g or T=g ` Newton =9.8 N
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