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Two forces P=5N and Q=10N are acting at ...

Two forces P=5N and Q=10N are acting at a point making an angle of `30^(@)` with each other. What is the value of the dot product of P and Q ?

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`vecP.vecQ=PQ costheta`
`=5xx10xxcos30^(@)=50xx0.866=43.3` units
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