Physics 2314, Homework #6 (due 3/7)
Multiple choice questions
M1 A particle is moving in a conservative force eld from point a to point b. At point a the
particles potential energy is equal to its kin
Physics 1214, Homework #3: solutions
Answers to multiple choice questions: M1: B; M2: B, C.
P1: 490 N
P2: (a) = 30
1
(b) k = 1 = 0.293
2
F cos
mg F sin
(no numerical value since the magnitude of F w
Physics 2314, Homework #4 (due 2/21)
Multiple choice questions
M1 For an object moving along the radius with a constant velocity in a rotating reference
frame, Coriolis force is
A. parallel to centrif
Physics 2314, Homework #3 (due 2/7)
Multiple choice questions
M1 A system of frictionless pulleys is at equilibrium (the acceleration of each of the blocks
m1 and m2 is zero). What is the ratio of mas
Physics 1214, Homework #2: solutions
Answers to multiple choice questions: M1: A, D; M2: (a) B, (b) C.
g
x2
P1: y = x tan 2
2v cos2
0.196x2 3x + 2.5 = 0
x=1.82 m or x=7.02 m
1
P2: x = vt, y = gt2
2
x
Physics 1214, Homework #1: solutions
Answers to multiple choice questions: M1: C, M2: B,C; M3: B.
P1:
A + B = 3i + 4j
A B = i
|A + B| = 5
|A B| = 1
(A + B) = 53.13
(A B) = 180
P2: b = 1, a = 2
P3: (a)
Physics 2314, Homework #2 (due 1/31)
Multiple choice questions
M1 What is constant in uniform circular motion? (There can be more than one correct
answer.)
A. speed
B. velocity
C. acceleration
D. the
Physics 1214, Homework #4: solutions
Answers to multiple choice questions: M1: B; M2: C.
P1: v =
P2: a =
gL sin = 1.2 m/s
sin( )
= 1.76 m/s
cos
P3: T satises
mv 2
T2
T (mg )2 = 0
L
Positive solution
Physics 2314, Homework #5 (due 2/28)
Multiple choice questions
M1 Potential energy of a particle is given by the equation U = 2x4 4x2 , where x is in
meters and U is in joules.
(a) What are the points
Physics 1214, Homework #8: solutions
Answers to multiple choice questions: M1: B; M2: B; M3: (a) B, (b) E.
P1: (a) A B = 2, A B = i j
(b) 22 + ( 2)2 = ( 2 3)2
(c) yes, because cos2 + sin2 = 1
P2: T si
Physics 1214, Homework #9: solutions
Answers to multiple choice questions: M1: C; M2: B.
P1: Assuming origin at the bottom left corner of each gure: (a) x = 6.25 cm, y = 6.25 cm;
(b) x = 6.91 cm, y =
Physics 1214, Homework #6: solutions
Answers to multiple choice questions: M1: C; M2: (a) D, (b) C.
P1: v =
k x2 2mgx
= 1.42 m/s
m
1
v
1
P2: 0 = m1 v 2 + m2
2
2
2
v=
P3: t =
2
m1 gH + m2 g
H
2
8gH
=
Physics 2314, Homework #1 (due 1/24)
Multiple choice questions
M1 Vector A has a magnitude of 2 m, and vector B has a magnitude of 5 m. Mark all
possible values for the magnitude of A B.
A. 3 m
B. 0
C