Module 4 Flashcards
dynamics
deals with motion of bodies under action of Fs
2 distinct parts of dynamics
kinematics, kinetics
kinematics
study of motion of bodies without reference to the forces which either cause the motion or are generated as a result of motion
kinetics
study of relationship between motion and the corresponding forces which cause or accompany motion
rectilinear motion
particle moves along straight line
displacement
change of particle with respect to certain fixed point
acceleration
rate of change of velocity of particle with respect to time
instantaneous acc
the acc of a particle at a particular point of line
D’Alembert’s principle
resultant of system of forces acting on a body in motion is in dynamic eqm with the inertia force
energy
capacity to do work
work
force x displacement
curvilinear motion
whenever the particle moves and describes a curved path
projectile
particle which is projected into space at an angle to the horizontal
trajectory
path traced by projectile
velocity of projection
velocity with which projectile is projected into space
angle of projection
angle with horizontal at which projectile is projected
time of flight
time during which the projectile is in motion
range
horizontal distance between the point of projection and hits the ground
horizontal range
horizontal distance between the point of projection and the point where the horizontal line through the point of projection meets the trajectory
point of projection
point from which the projectile is projected into the space
momentum
product of mass and velocity
