BME 231- Exam 2 With
Complete Solution
Dynamics - ANSWER The study of moving bodies. Describes the motion of
objects as a function of the forces and moments acting on those objects.
Dynamics Limitations - ANSWER 1. Rigid bodies
2. Planar motion (xy)
Kinematics - ANSWER Study of geometric aspects of motion alone
Linear - ANSWER Forces
Angular - ANSWER Moments
General Plane - ANSWER Both Forces and Moments
Rectilinear Motion - ANSWER movement along a straight line
curvilinear motion - ANSWER motion along a curved path
Displacement - ANSWER the change in position of an object
Distance Traveled - ANSWER total scalar distance, regardless of direction
Average Speed - ANSWER total distance divided by total time
IF acceleration is constant - ANSWER The three kinematics equations apply
Curvilinear Acceleration - ANSWER Direction dependent on:
1. Change in magnitude of velocity
, 2. Change in direction of velocity
Projectile Motion Acceleration - ANSWER Vertical and Constant
Dependent Motion - ANSWER For linked particles, we can establish
relationships based on geometric constraints or dependencies
Relative Motion - ANSWER A situation in which, either by nature of the data
or by chosen strategy, we collect data from a moving reference frame about
another point
B/A - ANSWER to B from A
Kinetics - ANSWER Study of motion as a result of applied forces and
moments
3 Key Methods - ANSWER 1. Acceleration
2. Work-energy
3. Impulse/momentum
Method 1: Acceleration - ANSWER Newton's 2nd Law; cannot be made from
a non-inertial reference frame
2 Types of Acceleration - ANSWER 1. Kinematics - force (inverse dynamics);
easier
2. Force - kinematics; harder
Rectangular Coordinates Acceleration - ANSWER 1. Fx = m*ax
2. Fy = m*ay
3. Fz = m*az
Complete Solution
Dynamics - ANSWER The study of moving bodies. Describes the motion of
objects as a function of the forces and moments acting on those objects.
Dynamics Limitations - ANSWER 1. Rigid bodies
2. Planar motion (xy)
Kinematics - ANSWER Study of geometric aspects of motion alone
Linear - ANSWER Forces
Angular - ANSWER Moments
General Plane - ANSWER Both Forces and Moments
Rectilinear Motion - ANSWER movement along a straight line
curvilinear motion - ANSWER motion along a curved path
Displacement - ANSWER the change in position of an object
Distance Traveled - ANSWER total scalar distance, regardless of direction
Average Speed - ANSWER total distance divided by total time
IF acceleration is constant - ANSWER The three kinematics equations apply
Curvilinear Acceleration - ANSWER Direction dependent on:
1. Change in magnitude of velocity
, 2. Change in direction of velocity
Projectile Motion Acceleration - ANSWER Vertical and Constant
Dependent Motion - ANSWER For linked particles, we can establish
relationships based on geometric constraints or dependencies
Relative Motion - ANSWER A situation in which, either by nature of the data
or by chosen strategy, we collect data from a moving reference frame about
another point
B/A - ANSWER to B from A
Kinetics - ANSWER Study of motion as a result of applied forces and
moments
3 Key Methods - ANSWER 1. Acceleration
2. Work-energy
3. Impulse/momentum
Method 1: Acceleration - ANSWER Newton's 2nd Law; cannot be made from
a non-inertial reference frame
2 Types of Acceleration - ANSWER 1. Kinematics - force (inverse dynamics);
easier
2. Force - kinematics; harder
Rectangular Coordinates Acceleration - ANSWER 1. Fx = m*ax
2. Fy = m*ay
3. Fz = m*az
