Applied Mechanics and Graphic Statics If two forces are in equilibrium, then the forces must(i) Be equal in magnitude(ii) Be opposite in sense(iii) Act along the same line Only (i) (i) and (iii) (i) and (ii) All (i), (ii) and (iii) Only (i) (i) and (iii) (i) and (ii) All (i), (ii) and (iii) 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 smooth surfaces Floor is smooth and the wall is rough Floor and wall both are rough surfaces Floor is rough and the wall is smooth Floor and wall both are smooth surfaces Floor is smooth and the wall is rough Floor and wall both are rough surfaces Floor is rough and the wall is smooth ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The condition of equilibrium for any system of forces in a plane is Both (A) and (B) None of these That resultant couple must be zero That polygon of forces must close Both (A) and (B) None of these That resultant couple must be zero That polygon of forces must close ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics ‘u₁’ and ‘u₂’ are the velocities of approach of two moving bodies in the same direction and their corresponding velocities of separation are ‘v₁’ and ‘v₂’. As per Newton's law of collision of elastic bodies, the coefficient of restitution (e) is given by e = v₁ - v₂/u₂ + u₁ e = v₁ - v₂/u₂ - u₁ e = v₂ - v₁/u₁ - u₂ e = u₂ - u₁/v₁ - v₂ e = v₁ - v₂/u₂ + u₁ e = v₁ - v₂/u₂ - u₁ e = v₂ - v₁/u₁ - u₂ e = u₂ - u₁/v₁ - v₂ ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics Newton's law of Collision of elastic bodies states that when two moving bodies collide each other, their velocity of separation Bears a constant ratio to their velocity of approach Is inversely proportional to their velocity of approach Is directly proportional to their velocity of approach Is equal to the sum of their velocities of approach Bears a constant ratio to their velocity of approach Is inversely proportional to their velocity of approach Is directly proportional to their velocity of approach Is equal to the sum of their velocities of approach ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The Centre of gravity of a 10 × 15 × 5 cm T section from its bottom, is 7.5 cm 7.85 cm 8.75 cm 5.0 cm 7.5 cm 7.85 cm 8.75 cm 5.0 cm ANSWER DOWNLOAD EXAMIANS APP
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