Applied Mechanics and Graphic Statics If the resultant of two forces ‘P’ and ‘Q’ acting at an angle ‘θ’ makes an angle ‘α’ with ‘P’, then tan α equals P sin θ/P - Q cos θ Q sin θ/P + Q sin θ Q sin θ/P + Q cos θ P sin θ/P + Q tan θ P sin θ/P - Q cos θ Q sin θ/P + Q sin θ Q sin θ/P + Q cos θ P sin θ/P + Q tan θ ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A ball which is thrown upwards, returns to the ground describing a parabolic path during its flight Kinetic energy of the ball remains constant Horizontal component of velocity remains constant Speed of the ball remains constant Vertical component of velocity remains constant Kinetic energy of the ball remains constant Horizontal component of velocity remains constant Speed of the ball remains constant Vertical component of velocity remains constant ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec²) 50 m/sec 15 m/sec 40 m/sec 25 m/sec 50 m/sec 15 m/sec 40 m/sec 25 m/sec ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if Floor and wall both are rough surfaces Floor and wall both are smooth surfaces Floor is smooth and the wall is rough Floor is rough and the wall is smooth Floor and wall both are rough surfaces Floor and wall both are smooth surfaces Floor is smooth and the wall is rough Floor is rough and the wall is smooth ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The necessary condition of equilibrium of a body is: Algebraic sum of vertical components of all the forces must be zero All (A), (B) and (C) Algebraic sum of horizontal components of all the forces must be zero Algebraic sum of the moments of the forces about a point must be zero Algebraic sum of vertical components of all the forces must be zero All (A), (B) and (C) Algebraic sum of horizontal components of all the forces must be zero Algebraic sum of the moments of the forces about a point must be zero ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The resultant of two forces P and Q is R. If Q is doubled, the new resultant is perpendicular to P. Then, Q = R P = Q None of these P = R Q = R P = Q None of these P = R ANSWER DOWNLOAD EXAMIANS APP