56) Pick up wrong statement about friction force for dry surfaces. Friction force is
Answer is:
proportional to velocity of sliding
Related Engineering Mechanics MCQ with Answers
Answer is:
mechanical advantage is equal to velocity ratio
Explanation:
An ideal machine is that in which there is no dissipation of energy in any manner. In an ideal machine, the work output is equal to the work input, i.e., efficiency of an ideal machine is 100%.
In ideal machines mechanical advantage is equal to velocity ratio.
Answer is:
less inclined when standing
Answer is:
45°
Explanation:
Angle of projection: Angle of projection is the angle, with the horizontal,at which the projectile is projected.
A projectile is fired at an angle θ to the vertical. Its horizontal range will be maximum when θ is 45°.
