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23 Nov 2019
In the following, K = kinetic energy, U = potential energy, and W =work. In using the expression K2 + U2 = K1 + U1 + Wother werecognize that
a. K and U can be either positive or negative, depending on thereference point chosen.
b. we are assuming no friction is present.
c. gravitational and elastic potential energies would be includedin U1 and U2.
d. Wother is always positive.
e. gravitational and elastic potential energies would be includedin Wother.
In the following, K = kinetic energy, U = potential energy, and W =work. In using the expression K2 + U2 = K1 + U1 + Wother werecognize that
a. K and U can be either positive or negative, depending on thereference point chosen.
b. we are assuming no friction is present.
c. gravitational and elastic potential energies would be includedin U1 and U2.
d. Wother is always positive.
e. gravitational and elastic potential energies would be includedin Wother.
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answers
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watching
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