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(phys011)[2010](f)quiz~3224^_10047.pdf
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PHYS 011, Quiz 2 Sol
1. A particle is released from point A with zero initial speed, and the move in a one-dimensional potential field as shown in the figure.
1.
The particle has the maximum speed at point(s): __G_________

2.
The force on the particles is along the positive direction at point(s):_A,B,F___

3.
The stable equilibrium point(s) is/are: ___C__G______

4.
The unstable equilibrium point(s) is/are: ____E_______

5.
If the mass of the particle is 1kg, what is the particle speed at point E? (show your calculations)


60

50

40

30

20

10

0



A

I

R
ele as e po
in
t
B



D
E
H



C
F

G



0
1.0 2.0 3.0 4.0
x (m)

PE (J)

2.E
12
p
.E . mv , get v .
. 52(
m /)
s
p 2 m
2.