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
The impulse-momentum theorem states that impulse equals:
Answer: Change in linear momentum
Impulse J = F·Δt equals the change in linear momentum (mv₂ - mv₁).
For a belt or rope wrapped around a drum with friction, the ratio of tension forces is given by:
Answer: T₁/T₂ = e^(μθ)
The capstan equation gives T₁/T₂ = e^(μθ), where μ is the friction coefficient and θ is the angle of wrap in radians.
What is the natural frequency of a spring-mass system with spring constant k = 400 N/m and mass m = 1 kg?
Answer: 20 rad/s
Natural frequency ωₙ = √(k/m) = √(400/1) = 20 rad/s.
The parallel axis theorem states that I = I_cm + ?
Answer: mr²
The parallel axis theorem: I = I_cm + md², where d is the distance between the centroidal axis and the parallel axis.
In a rigid body undergoing pure rotation, velocity of a point at radius r is:
Answer: v = rω
For pure rotation, the tangential velocity of a point is v = rω, where r is the radial distance and ω is angular velocity.
Which law governs the orbital motion of planets, stating that planets sweep equal areas in equal times?
Answer: Kepler's Second Law
Kepler's Second Law (equal areas in equal times) reflects conservation of angular momentum for planets orbiting the Sun.