Try this at Home! Insta - freeze
Dissolved gases in a liquid lower the freezing point temperature. When the gases leave, the liquids is able to freeze.
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Ex 3) Pendulum Where is PE max?, KE Max?, PE = 0?,
If PE at A = 10 J, KE = 0
If PE at C = 3 J, KE = ?
KE = 7 J
Ex) If the Wf as the pendulum moves from A to B is 1.5 J, what are the KE and PE of
the pendulum at the bottom of the swing?
PE = 0 J
KE = 8.5 J
Teachers - Check out this great clipart archive - Wpclipart
All Pendulums
Ex 4) 1.0 kg pendulum swings to height of .20 m above lowest point. KE of pendulum at lowest point?
PE = mgh = (1.0 kg)(9.8 m/s2)(.20 m)
PE = 1.96 J
PE = KE @ B = 2.0 J
Ex) A pendulum is pulled to the side and released. Which plot of d vs PE is correct?
Answer
Ex 5)
5.00-kg cart at
foot of hill 10.0 m high.
For cart to reach the top of the hill,
what is minimum K.E.
of the cart in the position shown?
[neglect friction.]
m = 5.00 kg h = 10.0 m KE = ?
KE at bottom = PE at 10.0 m
KE = PE = mgh = 5.00 kg(9.8 m/s2)10.0 m
KE = 490. J
Author H. Christiaen, K.U.Leuven, Belgium
Finding the height of a
pendulum
Enrichment
Pendulum Top View
Foucault's Pendulum - Proved the earth rotates
School blocks YouTube? Use the file below. Pendulum mounted on a rotating base
School blocks YouTube? Use the files below. | Foucault_Pendulum.mpg | Foucault_Pendulum.wmv |
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