Engineering Mechanics The velocity of a body on reaching the ground from a height h, is 2g.√h 2.√(gh) √(gh) √(2gh) 2g.√h 2.√(gh) √(gh) √(2gh) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.) tan(α - φ)/tanα None of these tan(α + φ)/tanα tanα/tan (α + φ) tan(α - φ)/tanα None of these tan(α + φ)/tanα tanα/tan (α + φ) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The maximum velocity of a particle moving with simple harmonic motion is ω/r ωr ω2r ω ω/r ωr ω2r ω 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 Upward at its upper end Zero at its upper end Perpendicular to the wall at its upper end Downward at its upper end Upward at its upper end Zero at its upper end Perpendicular to the wall at its upper end ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The ratio of static friction to dynamic friction is always Less than one Equal to one None of these Greater than one Less than one Equal to one None of these Greater than one ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following: None of these The change in momentum suffered by rubber ball is less than the lead ball Both the balls undergo an equal change in momentum The change in momentum suffered by rubber ball is more than the lead ball None of these The change in momentum suffered by rubber ball is less than the lead ball Both the balls undergo an equal change in momentum The change in momentum suffered by rubber ball is more than the lead ball ANSWER DOWNLOAD EXAMIANS APP
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