Engineering Mechanics On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be Downwards at its upper end Away from the wall at its upper end Upwards at its upper end Towards the wall at its upper end Downwards at its upper end Away from the wall at its upper end Upwards at its upper end Towards the wall at its upper end ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics When a person, on a bicycle, drives round a curve, he has to lean __________ to maintain equilibrium. Towards back Towards front Inward Outward Towards back Towards front Inward Outward ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The time of flight of a projectile on downward inclined plane depends upon Angle of projection None of these Both (A) and (B) Angle of inclination of the plane Angle of projection None of these Both (A) and (B) Angle of inclination of the plane ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The centre of percussion of the homogeneous rod of length ‘L’ suspended at the top will be 2L/3 3L/4 L/2 L/3 2L/3 3L/4 L/2 L/3 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.) P = m/W + C P = mW + C P = mW - C P = C - mW P = m/W + C P = mW + C P = mW - C P = C - mW 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 cos (α + φ) 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) ANSWER DOWNLOAD EXAMIANS APP
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