Applied Mechanics and Graphic Statics
A point subjected to a number of forces will be in equilibrium, if

Algebraic sum of the moments of the forces about the point is zero
Two resolved parts in any two directions at right angles are equal
Algebraic sum of the forces is zero
Sum of resolved parts in any two directions at right angles, are both zero

ANSWER DOWNLOAD EXAMIANS APP

Applied Mechanics and Graphic Statics
The maximum displacement of a particle executing S.H.M. corresponds to

Minimum kinetic energy and minimum potential energy
Zero kinetic energy and maximum potential energy
Maximum kinetic energy and maximum potential energy
Zero potential energy and maximum kinetic energy

ANSWER DOWNLOAD EXAMIANS APP