FAZEEL KHAN SHORT WRITING ASSIGNMENT FOR STUDENTS
Fazeel Khan Course: EGR-311 (Dynamics), Junior/senior level, approx. enrollment – 25. Category selected: #11, Problems with Problem Revised version Goal: To facilitate the visualization of 'equations' through generally occuring observations and experiences. Topic: Planar Motion Activity to be attempted in pairs, In-class time trial (time limit: 5min). Each student in a group should attempt the solution individually before consulting with his/her group member(s). A satisfactory completion will entail providing an appropriate coordinate system, identifying a false statement contained within the problem description, and a correct labeling of all acceleration vectors. Completion of these requirements will be verified by the instructor in class.
Assignment: There are several forces associated with the motion of an object in a circular path. These forces give rise to accelerations. Consider the following example pertaining to circular motion in light of the equations of motion introduced in class and,
Consider riding in a car kept on a circular path (around a rotary perhaps). The driver presses the throttle to make the car increase its speed. As a passenger seated on the outside of the turn, one would experience a push on the back from the seat and a push from the door as one leans against it, assuming that the car is moving fast enough. These ‘pushes’ are manifestations of forces that cause accelerations, in the direction of motion and outwards from the center of rotation. Use the following notation to label the diagram. Angular velocity: |
rad/s, angular acceleration: 
rad/s2, and radius 
m. Also add vectors for the normal and tangential acceleration.