Work Energy And Power Question 333
Question: DIRECTION: In the following questions, more than one of the answers given are correct. Select the correct answers and mark it according to the following codes:
Codes Choose the correct options - (1) The work done by forces may be equal to change in kinetic energy (2) The work done by forces may be equal to change in potential energy (3) The work done by forces may be equal to change in total energy (4) The work done by forces must be equal to change in potential energy.
Options:
A) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Show Answer
Answer:
Correct Answer: A
Solution:
[a] [a] The work done by all forces equal to change in kinetic energy [b] The work done by conservative forces equal to change in potential energy [c] The work done by external and nonconservative forces equal to change in total energy
