Reciprocating and Rotating Masses

Question 1

Acceleration of rotating component

Answer 1

a = -rw(^2)

Question 2

Vector solution balancing of masses (single plane)

Answer 2

add up all rw vectors - find unbalanced vector - draw opposite vector as balancing vector

Question 3

Analytical solution balancing of masses (single plane)

Answer 3

• draw table
• m r theta known
• calculate mr product
• calculate mr x and y components
• find total cartesion inbalance
• find total polar inbalance
• add/subtract 180 to angle

Question 4

scotch yoke n = ?

Answer 4

n = L/r

Question 5

primary force equation

Answer 5

Fp = mrw(^2)cos(theta)

Question 6

secondary force equation

Answer 6

Fs = mrw(^2) cos(2theta)/n