Statics and Dynamics Flashcards
6 cards from real EIT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Statics and Dynamics flashcards as text
For a body in static equilibrium, the sum of all forces must equal:
Answer: Zero
Static equilibrium requires ΣF = 0 (net force) and ΣM = 0 (net moment), meaning all forces and moments balance.
The moment of a force about a point is calculated as:
Answer: Force × perpendicular distance from the point to the line of action
Moment (torque) M = F × d, where d is the perpendicular distance from the pivot to the line of action of the force.
What is the centroid location of a uniform rectangular plate with width w and height h?
Answer: At the center (w/2, h/2)
For a uniform rectangle, the centroid is at the geometric center, at distances w/2 and h/2 from each respective side.
Newton's second law for a particle states:
Answer: F = ma
Newton's second law: net force F = ma, where m is mass and a is acceleration.
A 500N block rests on a horizontal surface with μ_s = 0.4. What is the maximum static friction force?
Answer: 200 N
Maximum static friction f_s = μ_s × N = 0.4 × 500 = 200 N.
The principle of work-energy theorem states that net work done on a particle equals:
Answer: Change in kinetic energy
The work-energy theorem states W_net = ΔKE = ½mv₂² - ½mv₁², relating net work to the change in kinetic energy.