MechOneSecC Flashcards
Setup a friction problem
A mass to be converted to Newtons (rN)^^^^^^
A friction Force «««
A Applied Force »_space;»>
If attached to a static value take diff of friction value
Convert mass to Newtons
KGs * 9.81
Crane Lifts X kg
a distance of x m
Work?
Work = F x d
or W x dload
or mg x d
Belt Drive Problem Setup 1
Convert Values
Convert d to r
RPM is RPM/60 (RPS)
Energy used or supplied
P=Energy/time
Belt Drive ,dn,Tension = TQE
TQE = (T1-T2)rr
Belt Drive ,dn,Tension = W^1 and W^2760
W^1 = 2 PI (TQE)
W^1 * 2760
Belt Drive ,dn,Tension = Power
P=2 PI n TQE
Circular Saw ,Power = input power
(long n)=Pout / Pin * 100
Circular Saw ,Power = energy
P=Energy/time
TQE,n = Power
P=2 PI n TQE
Belt drive,Tension,dr
TQE = (T1-T2)rr
then
W^1 = 2 PI (TQE)
W^1 * xx
Belt Drive Problem Setup 2
Draw Belt Drive
Label
Arrows
nr,dr,rr,
Belt Drive Problem Setup 3
nn,dn,rn
VR
TQE
P
Belt Drive Problem Setup 4
Assess Equation required
Write Equations
Substitute and solve
