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Inclined Planes

ntIf a pushin...

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ntIf a pushing force making an angle alpha with the horizontal is applied on a block of mass m placed on horizontal table and angle of friction is beta, then minimum magnitude. Force required to move block isn ntA)mgsinbeta/cos(alpha-beta)n ntB) mgsinbeta/cos(alpha+beta)n ntC) mgsinbeta/sin(alpha+beta)n ntD)mgcosbeta/cos(alpha-beta)n

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