Dynamics by Mr. Lam

what is dynamics?

the study of forces

what is the unit for forces?

Newton

what is normal force?

force exerted on object to support it

normal force always acts _____ to _______

perpendicular, the surface

what should you not do if vectors point in the same direction when drawing free body diagrams?

“stack“ them

what is the abbreviation for applied force?

FA

what is the abbreviation for normal force?

FN

what is the abbreviation for tension force?

FT

what is tension force?

pull exerted by a cord

given gravity acceleration = g, mass = m, what is the formula for force of gravity?

mg

what is the abbreviation for spring force?

Fs

what is Newton’s First Law?

everything has inertia

what is Newton’s second law?

forces cause acceleration inversely proportional to its mass

what is Newton’s third law?

forces always occur in pairs

when you need to use kinematics to solve dynamics problems, what variable should you focus on the most?

acceleration

static friction is always ____ than kinetic friction

larger

tension can only….

exert pull

in a compound body problem, both bodies ______

experience same acceleration

does normal force pair with gravitational force?

no