Engineering Mechanics Which of the following statement is correct in connection with projectiles? All of these The velocity, with which a projectile is projected, is known as the velocity of projection. A path, traced by a projectile in the space, is known as trajectory. The angle, with the horizontal, at which a projectile is projected, is known as angle of projection. All of these The velocity, with which a projectile is projected, is known as the velocity of projection. A path, traced by a projectile in the space, is known as trajectory. The angle, with the horizontal, at which a projectile is projected, is known as angle of projection. ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.) y = (gx²/2u² cos²α) + x. tanα y = x. tanα + (gx²/2u² cos²α) y = (gx²/2u² cos²α) - x. tanα y = x. tanα - (gx²/2u² cos²α) y = (gx²/2u² cos²α) + x. tanα y = x. tanα + (gx²/2u² cos²α) y = (gx²/2u² cos²α) - x. tanα y = x. tanα - (gx²/2u² cos²α) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The force applied on a body of mass 100 kg to produce an acceleration of 5 m/s2, is 20 N 500 N 100 N None of these 20 N 500 N 100 N None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A machine having an efficiency greater than 50%, is known as Neither reversible nor non-reversible machine Non-reversible machine Reversible machine Ideal machine Neither reversible nor non-reversible machine Non-reversible machine Reversible machine Ideal machine ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The force, by which the body is attracted, towards the center of the earth, is called Momentum Mass Weight Impulsive force Momentum Mass Weight Impulsive force ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will Slant down towards direction of pull Remain horizontal None of these Slant up towards direction of pull Slant down towards direction of pull Remain horizontal None of these Slant up towards direction of pull ANSWER DOWNLOAD EXAMIANS APP
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