Engineering Mechanics
The ratio of limiting friction and normal reaction is known as

Coefficient of friction
Sliding friction
Angle of friction
Angle of repose

ANSWER DOWNLOAD EXAMIANS APP

Engineering Mechanics
The total momentum of a system of masses (i. e. moving bodies) in any one direction remains constant, unless acted upon by an external force in that direction. This statement is called

Newton's second law of motion
Principle of conservation of energy
Principle of conservation of momentum
Newton's first law of motion

ANSWER DOWNLOAD EXAMIANS APP