Engineering Mechanics In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.) P = W tan (α + φ) P = W cos (α + φ) P = W tan (α - φ) P = W tan (φ - α) P = W tan (α + φ) P = W cos (α + φ) P = W tan (α - φ) P = W tan (φ - α) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The maximum height of a projectile on a horizontal plane, is u² cos²α/2g u² sin²α/2g u² cos²α/g u² sin²α/g u² cos²α/2g u² sin²α/2g u² cos²α/g u² sin²α/g ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The unit of angular velocity is rad/s m/min Revolutions/min Both (B) and (C) rad/s m/min Revolutions/min Both (B) and (C) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A particle inside a hollow sphere of radius r, having coefficient of friction µ can rest up to height of 0.134 r r/2 r/3 r/A 0.134 r r/2 r/3 r/A ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Moment of inertia is the Second moment of force All of these Second moment of area Second moment of mass Second moment of force All of these Second moment of area Second moment of mass ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is mr²/3 3mr²/5 2mr²/5 2mr²/3 mr²/3 3mr²/5 2mr²/5 2mr²/3 ANSWER DOWNLOAD EXAMIANS APP
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