Engineering Mechanics On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be Downwards at its upper end Zero at its upper end Perpendicular to the wall at its upper end Upwards at its upper end Downwards at its upper end Zero at its upper end Perpendicular to the wall at its upper end Upwards at its upper end ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The maximum frictional force which comes into play when a body just begins to slide over another surface is called Limiting friction Sliding friction Kinematic friction Rolling friction Limiting friction Sliding friction Kinematic friction Rolling friction ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The time of flight (t) of a projectile on a horizontal plane is given by t = 2u/g.sinα t = 2u. sinα/g t = 2u. cosα/g t = 2u. tanα/g t = 2u/g.sinα t = 2u. sinα/g t = 2u. cosα/g t = 2u. tanα/g ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The centre of gravity a T-section 100 mm × 150 mm × 50 mm from its bottom is 50 mm 125 mm 75 mm 87.5 mm 50 mm 125 mm 75 mm 87.5 mm ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The maximum efficiency of a screw jack is (1 + sinφ)/(1 - sinφ) (1 - sinφ)/(1 + sinφ) (1 + tanφ)/(1 - tanφ) (1 - tanφ)/(1 + tanφ) (1 + sinφ)/(1 - sinφ) (1 - sinφ)/(1 + sinφ) (1 + tanφ)/(1 - tanφ) (1 - tanφ)/(1 + tanφ) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The unit of force in S.I. system of units is Watt Kilogram Dyne Newton Watt Kilogram Dyne Newton ANSWER DOWNLOAD EXAMIANS APP
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