SATHEE: Work Energy And Power Question 301

Work Energy And Power Question 301

Question: If only conservative forces are working in the system and we apply some external force

Options:

A) $W_{e x t} = Δ U$ (always)

B) $W_{c o n s e r v a t i v e} = - Δ U$ (always)

C) $W_{e x t} = Δ U + Δ K E$ (always)

D) $W_{c o n s e r v a t i v e} = - Δ K E$

Show Answer

Answer:

Correct Answer: B

Solution:

[b] If only conservative forces are acting in the system.

$\Rightarrow$ $W_{e x t} = Δ U$ (If body moves without acceleration)

$W_{e x t} = Δ U + Δ K E$ (if body moves with acceleration)

$\Rightarrow$ $W_{c o n s e r v a t i v e} = - Δ U$ (always)

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Work Energy And Power Question 301

Question: If only conservative forces are working in the system and we apply some external force

Options:

Answer:

Solution:

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