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The bob of a simple pendulum of length 1...

The bob of a simple pendulum of length 1 m has mass 100 g and a speed of 1.4 m/s at the lowest point in its path. Find the tension in the stirng at this instant.

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A, B
At lowest point
`T=mg+(mv^2)/r`
`Here `m=100 gm=1/10 kg, `
`r=1m,v `
`v=1.4 m/sec`
`T=mg+(mv^2)/r`
`=(1/10)x9.8+((1.4)^2)/10`
`=0.98xx0.196`
`=1.176~~1.2N`
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