ENGMECH Quiz 2 Flashcards
Branch of engineering mechanics which deals with the study of forces and their effects on particles and rigid bodies in motion.
Dynamics of Rigid Bodies
Study of geometry in motion
Kinematics
Kinematics is used to relate __________________ without reference to the cause of motion.
Displacement, velocity, acceleration, and time
Study of the relations existing between the forces acting on a body, the mass of the body, and the motion of the body.
Kinetics
The motion of a particle can be ___________ and __________.
Constrained - Particle is confined to a specific path (ex. sliding a bead along a wire)
Unconstrained - No physical guide to particle’s motion.
Motion along a straight line
Rectilinear Motion (constrained motion)
Distance is a ________ quantity while displacement is a ________ quantity.
Scalar, Vector
Formulas for Rectilinear Motion with Constant Acceleration
V = V0 + at
s - s0 = v0t + 1/2 at^2
(v final)^2 - (v inital)^2 = 2a (s - s0)
a ds = v dv
1 m / s = _________ km/ hr
3.6 km/hr
A constant acceleration of 9.81 m/s^2 is equivalent to _________ in ft/s^2
32.2 ft/s^2
The resulting curvilinear motion is then obtained by a vector combination of the x and y components of the position vector, the velocity, and the acceleration.
Rectangular Coordinates
The resulting curvilinear motion is then obtained by a vector combination of the x and y components of the position vector, the velocity, and the acceleration.
Rectangular Coordinates
Type of kinetics that is concerned with concurrent force systems. It deals with translational forces.
Particle Kinetics
Type of kinetics that is concerned with non-concurrent forces. It deals with both translational and rotational forces.
Rigid Body Kinetics
The resultant of the external forces applied to a body composed of a system of particles is equivalent to the vector summation of the effective forces acting on all particles.
D’Alembert’s Principle
