Engineering Mechanics The resultant of two forces P and Q (such that P > Q) acting along the same straight line, but in opposite direction, is given by P - Q P / Q Q / P P + Q P - Q P / Q Q / P P + Q ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act Downward at its upper end Zero at its upper end Perpendicular to the wall at its upper end Upward at its upper end Downward at its upper end Zero at its upper end Perpendicular to the wall at its upper end Upward at its upper end ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella More inclined when standing More inclined when moving Less inclined when standing Less inclined when moving More inclined when standing More inclined when moving Less inclined when standing Less inclined when moving ANSWER DOWNLOAD EXAMIANS APP
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 (φ - α) P = W tan (α + φ) P = W tan (α - φ) P = W cos (α + φ) P = W tan (φ - α) P = W tan (α + φ) P = W tan (α - φ) P = W cos (α + φ) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a sphere of mass 'm' and radius 'r', about an axis tangential to it, is 2mr²/5 7mr²/3 7mr²/5 2mr²/3 2mr²/5 7mr²/3 7mr²/5 2mr²/3 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Work done is said to be zero, when No force acts on a body but some displacement takes place None of these Some force acts on a body, but displacement is zero Either (A) or (B) No force acts on a body but some displacement takes place None of these Some force acts on a body, but displacement is zero Either (A) or (B) ANSWER DOWNLOAD EXAMIANS APP
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