Physics 101 - Suggested Extra Problems     Fall '00

The more problems you solve, the better prepared you will be for the tests...

Various people have asked for a list of suggested problems, aside from the homework, that would be particularly good to attempt. I have selected some good extra problems from Fishbane et al. (either odd-numbered ones, so you can check the answer in the back of the book, or else I'll put the numerical answer here), but I'd also suggest that you could look at one or more of the alternate textbooks for additional problems and worked examples. I'll try and update this list as the term progresses...  

Chapter 1:
1-12    (Answer: 9.9 x 108 t/cm3)
1-51
1-56    (Answer: v = k(B/1/2, where k is an unknown constant).
Chapter 2:
2-10    (Answer: v0-½g;   v0-3g/ 2;   v0-(+½)g)
2-26    (Answer: a = 10.5 m/s2)
2-37
2-49
2-58    (Answer: 10.9 m, and gplanet = 1.27 m/s2)
2-73    (imagine surviving without a parachute!)
Chapter 3:
3-23
3-25
3-28    (Answer: a) at foot of mast   b) 1.3 s   c) 4.4 m horizontal and 8.5 m vertical)
3-46    (Answer: a) 15 m/s2;   8.2 m/s)
3-64    (Answer: 27 m/s)
Chapter 4:
4-18    (Answer: 105 m/s; 106 m/s; 108 m/s)
4-27
4-31
4-59
4-63
Chapter 5:
5-2    (Answer: 27 lb)
5-5    (any problem involving hockey has got to be good... )
5-9
5-22    (Answer: 5.9 x 102 N)
5-34    (Answer: 9.4 m/s; 4.7 m)
5-45
5-51    ( does anyone remember turntables and vinyl records?)
5-74    (Answer: 9.3 m/s)
Chapter 6:
6-11
6-33
6-34    (Answer: Wf = -4.3 x 102 J; µk = 0.20 )
6-37    Hint: integrate...
6-77
6-84    (Answer: a) 5.9 x 103N; b) -2.8 x 105J; c) 23 m/s)
Chapter 7:
7-6    (Answer: Farcher = 2bx+3cx2; Fstring = -2bx - 3cx2)
7-14    (Answer: a) 4.8 cm;   b) -1.7 m/s)
7-19    This is a realistic form for this potential
7-43
7-57
7-65    Hint: you can use the fact that the rope's length did not change to relate the change in height of one mass to the other...
Chapter 8:
8-9
8-26    (Answer: 11 m/s, straight up)
8-38    (Answer: a) v4=1.8 m/s; v3=-3.6 m/s   b) 0.66 m)
8-41
8-51
8-74    (Answer: 2.2 m)
Chapter 9:
9-9
9-12    (Answer: 18.6 cm)
9-21
9-47
9-53
9-55
Chapter 10:
10-2    (Answer: 3i + 5j + 9k Kgm2/s)
10-6    (Answer: -(mbv/(1+a2)1/2k )
10-27
10-38    (Answer: a) 1.4 x 104 Kgm2 b)   8.1 x 106 J)
10-52    (Answer: a) 1.4 m/s2   b) 1.5 s)
Chapter 11:
11-8    (Answer: 1.33 from center for lighter child; 1.47 m from center for heavier child)
11-10    (Answer: 0.48 m)
11-19
11-22     (Answer: a) 57°   b) the board will fall)
11-29
Chapter 12:
12-16    (Answer: a) 2.59 x 108 m from Earth's center; b) 3.46 x 108 from Earth's center)
12-22    (Answer: 1.74 x 108 m/s - Wow! )
12-24    (Answer: 4.08 x 106 m)
12-29
12-42    (Answer: a) 9.6 x 10-4g, or 9.41 x 10-3 m/s2)
12-53    ( Anyone remember the film 2001: A Space Odyssey? )

Physics 101
College of William and Mary
Dept. of Physics

armd@physics.wm.edu
last updated: Nov. 6 2000