Spherical Mirrors: If a spherical convex mirror has a radius of curvature R, the magnitude of its focal length is
A. R/2.
B. R/4.
C. R.
D. 2R.
E. 4R.
Answer: A
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Fill in the blank(s) with the appropriate word(s).
A ball rolling down an incline has its maximum potential energy at
A) the top. B) a quarter of the way down. C) halfway down. D) the bottom.
If the angular frequency of the motion of a simple harmonic oscillator is doubled, by what factor does the maximum acceleration of the oscillator change?
A) 2 B) 4 C) It does not change. D) 1/2 E) 1/4
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a. can be increased by shifting mass out away from the axis of rotation. b. can be decreased by shifting mass out away from the axis of rotation. c. can be increased by shifting mass in toward the axis of rotation. d. can be decreased by shifting mass in toward the axis of rotation. e. cannot be changed except by friction at the point of contact.