Engineering Mechanics The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius. 4r/ 3π 3r/ 8 3r/4π 8r/3 4r/ 3π 3r/ 8 3r/4π 8r/3 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Work done is said to be zero, when Either (A) or (B) No force acts on a body but some displacement takes place Some force acts on a body, but displacement is zero None of these Either (A) or (B) No force acts on a body but some displacement takes place Some force acts on a body, but displacement is zero None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The ratio of limiting friction and normal reaction is known as Coefficient of friction Angle of friction Angle of repose Sliding friction Coefficient of friction Angle of friction Angle of repose Sliding friction ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The rate of doing work is known as Power None of these Potential energy Kinetic energy Power None of these Potential energy Kinetic energy ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If a body is acted upon by a number of coplanar non-concurrent forces, it may All of these Be completely at rest Rotate about itself without moving Move in any one direction rotating about itself All of these Be completely at rest Rotate about itself without moving Move in any one direction rotating about itself ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The range of a projectile is maximum, when the angle of projection is 30° 45° 90° 60° 30° 45° 90° 60° ANSWER DOWNLOAD EXAMIANS APP
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