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A cook uses a fire tong of length 28 cm ...

A cook uses a fire tong of length 28 cm to lift a piece of burning coal of mass 250 g. If he applies his effort at a distance of 7 cm from the fulcrum, what is the effort in SI unit.

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Given load = 250 gf, load arm = 28 cm, effort arm=7 cm and effort=E
Now, `"load "xx" load arm" = "effort "xx" effort arm"`
`250 xx 28=E xx 7`
`E=(250 xx 28)/(7)= 1000 gf` = 1 kgf or 9.8 N
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