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