engineering mechanics

Question 1

mass and forces

Answer 1

mass: amount of matter contained within in
force: weight is the force acting upon it due to the acceleration of gravity

Question 2

principle of transmissibility of forces

Answer 2

force has the same effect whether its point of application is along its line of action

Question 3

force couple formula

Answer 3

moment (Nm) = force (N) x distance from pivot point (m)

Question 4

equilibrium

Answer 4

condition where all the forces are balanced

Question 5

equilibriant

Answer 5

force that will balance out all other forces and place system in equilibrium

Question 6

resultant

Answer 6

imaginary vector that could replace all the individual vectors acting yet having the same effect

Question 7

concurrent, collinear, non-concurrent

Answer 7

concurrent: pass through same point
collinear: all on the same line
non-concurrent: may intersect at variable points or be parallel