Engineering Mechanics - Study Mode
[#76] The velocity of a body on reaching the ground from a height h, is
Correct Answer
(C) $$sqrt {2{ ext{gh}}} $$
[#77] The force induced in the string AB due to the load W, as shown in the below figure is
Correct Answer
(D) W cosecθ
[#78] An ideal machine is one whose efficiency is
Correct Answer
(D) 100%
[#79] A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if
Correct Answer
(C) The floor and wall both are smooth surfaces
[#80] In the equation of virtual work, following force is neglected
Correct Answer
(D) All of the above