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The mass m of a body moving with a veloc...

The mass m of a body moving with a velocity v is given by `m=(m_(0))/sqrt(1-(V^(2))/(c^(2)))` where `m_(0)=` rest mass of body 10kg and c= speed of light `=3xx10^(8)m //s`. Find the value of m at ` v=3xx10^(7) m//s`,

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`m=m_(0)(1-v^(2)/c^(2))^(-1//2)=10[1-((3xx10^(7))/(3xx10^(8)))^(2)]^(-1//2)=10[1-1/100]^(-1//2)`
`~~10[1-(-1/2)(1/100)]=10+10/200~~10.05 kg`
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