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This is the Exam of Introduction to Physics which includes Magnitude of Acceleration, Net Force, Inferred About Force, Accelerate Without Changing Speed, Terms of Energy, Indicated Points, Frictionless Track etc. Key important points are: Magnitude of Acceleration, Net Force, Inferred About Force, Accelerate Without Changing Speed, Terms of Energy, Indicated Points, Frictionless Track, Three Forces Acting, Individual Forces
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St. Vincent College PH 103: Introduction to Physics
The exam consists of 4 questions. There will be 50 minutes to complete the exam. The questions may not be worth the same number of points, read the entire exam before beginning work. Put your name on all pages.
Problem 1 20
Problem 2 25 Problem 3 30
Problem 4 25
Total 100
a) (5 pts) What is the magnitude of the acceleration of the riders?
b) (5 pts) In what direction is the net force on a Ferris wheel rider when they are half-way up the wheel?
c) (5 pts) For a 70 kg rider, how much force does this work out to?
d) (5 pts) At what point in the ride around the wheel does the chair exert the most force on the rider, and why?
A
B
C
a) (10 pts) If the track is frictionless and the object is released from rest, which of the three indicated points is the object likely to reach before again coming to rest (only to start sliding back)?
b) (10 pts) Now the object is released from rest but on a track with a little friction. Which of the indicated points is the object likely to reach before coming to rest?
c) (10 pts) Finally, if the object is pushed down a frictionless track, at which point is it likely to stop before sliding back down?
10 N
5 N 5 kg 25 N
a) (5 pts) What is the net force acting on the block?
b) (5 pts) Compute the acceleration (including direction) of the block.
c) (10 pts) Find the work done by each of the individual forces as the block moves 15 m.
d) (5 pts) By how much does the energy of the block change as it moves 15 m?
