Engineering Mechanics The velocity ratio for the first system of pulleys is (where n is the number of pulleys.) 2n - 1 n² n 2n 2n - 1 n² n 2n ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Angle of friction is the The ratio of minimum friction force to friction force acting when the body is in motion Ratio of limiting friction and normal reaction The ratio of minimum friction force to the friction force acting when the body is just about to move Angle between normal reaction and the resultant of normal reaction and the limiting friction The ratio of minimum friction force to friction force acting when the body is in motion Ratio of limiting friction and normal reaction The ratio of minimum friction force to the friction force acting when the body is just about to move Angle between normal reaction and the resultant of normal reaction and the limiting friction ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.) P = W (cosα + μsinα) P = W tanα P = W tan (α + φ) P = W (sinα + μcosα) P = W (cosα + μsinα) P = W tanα P = W tan (α + φ) P = W (sinα + μcosα) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following: Both the balls undergo an equal change in momentum None of these The change in momentum suffered by rubber ball is more than the lead ball The change in momentum suffered by rubber ball is less than the lead ball Both the balls undergo an equal change in momentum None of these The change in momentum suffered by rubber ball is more than the lead ball The change in momentum suffered by rubber ball is less than the lead ball ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The wheels of a moving car possess Potential energy only Kinetic energy of translation and rotation both Kinetic energy of rotation only Kinetic energy of translation only Potential energy only Kinetic energy of translation and rotation both Kinetic energy of rotation only Kinetic energy of translation only ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The forces, which meet at one point and their lines of action also lie on the same plane, are known as Coplanar non-concurrent forces Coplanar concurrent forces Non-coplanar non-concurrent forces Non-coplanar concurrent forces Coplanar non-concurrent forces Coplanar concurrent forces Non-coplanar non-concurrent forces Non-coplanar concurrent forces ANSWER DOWNLOAD EXAMIANS APP
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