Engineering Mechanics
The energy possessed by a body, for doing work by virtue of its position, is called

Potential energy
Electrical energy
Chemical energy
Kinetic energy

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Engineering Mechanics
A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will

Slant up towards direction of pull
None of these
Remain horizontal
Slant down towards direction of pull

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Engineering Mechanics
The principle of transmissibility of forces states that, when a force acts upon a body, its effect is

Minimum, if it acts at the center of gravity of the body
Same at every point on its line of action
Different at different points on its line of action
Maximum, if it acts at the center of gravity of the body

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