Which of the following statements is/are true?Check all that apply.a. A dissipative interaction permits a two-way conversion bet
1 answer:
Answer:
a. A dissipative interaction permits a two-way conversion between kinetic and potential energies.
FALSE
in dissipative type of forces energy is not conserved so it is not possible
b. A nondissipative interaction permits a two-way conversion between kinetic and potential energies.
TRUE
in non dissipative type of force there is no energy loss so we can use energy conservation
c. A potential energy function can be specified for a dissipative interaction.
FALSE
Here potential energy is not defined for dissipative type of forces
d. A potential energy function can be specified for a nondissipative interaction.
TRUE
negative gradient of potential energy is equal to non dissipative type of forces
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Answer: gravitational potential energy is converted into kinetic energy
Explanation:
When the diver stands on the platform, at 20 m above the surface of the water, he has some gravitational potential energy, which is given by
where m is the man's mass, g is the gravitational acceleration and h is the height above the water. As he jumps, the gravitational potential energy starts decreasing, because its height h above the water decreases, and he acquires kinetic energy, which is given by
where v is the speed of the diver, which is increasing. When he touches the water, all the initial gravitational potential energy has been converted into kinetic energy.