1.

A particle is subjected to a force which varies with distance as shown in figure . The work done on the particle at in dispalcement of 12 m is …… . .

Answer»

18 J
21 J
26 J
13 J

SOLUTION :
Area under the graph
`F to d` indicates work done
` :. ` work done W = Area of ABCD + Area of `DeltaDCE`
` = 2 xx 4 +1/2 xx 5 xx2 `
` = 8+5`
` :. W= 13 J `


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