Problem 1 Solution:
(a)
N
T
F
F friction
T
T
m2
m2 g
m1
m1 g
(b) The block m1 moves in x-direction:
m1 a = F cos T N ,
N = m1 g F sin
The block m2 moves in y-direction:
m 2 a = T m2 g
Put in the values of m1 , m2 , F , and , we obtain
1
12M g
4
)
3M a =4
Problem 1: Kinematics (15 pts)
A particle moves along a straight line x. At time t = 0, its position is at x = 0. The velocity,
V , of the object changes as a function of time, t, as shown in the gure. V is in m/s, x is in
meter, and t is in seconds.
(a)
PH205 Practice Test 1
This test is of approximately 40 percent length but should
give you an idea of what to expect on the regular test.
NAME
Conceptual multiple choice, 4pts each.
Circle the one correct answer for each question.
1) On a graph that shows
Physics 205 Quiz 1
Example
NAME
10pt) The separation of two atoms in a molecule is given by x = A sin(t) where A
and are constant.
a) Give a brief description of how the atoms are moving.
b) Show that the acceleration as a function of time is equal to a =