Physics - W.E.P. Question with Solution | TestHub
PhysicsW.E.P.Work kinetic energy theoremMedium2 minQB
PhysicsMediumsingle choice
Passage / Comprehension
Two blocks 3 kg and 6 kg are placed on a rough surface () as shown in the figure. The friction coefficient between the two blocks is . A force F is applied on one of the blocks as stated in each question.
Choose the CORRECT statement.
Options:
Answer:
B
Solution:
The most the 3 kg block can drive the 6 kg block with is , while the ground can hold the 6 kg block up to . Since 24 < 27, the 6 kg block never moves, whatever F is.
(A) wrong: friction on the stationary 6 kg block does zero work. (C) wrong: the 3 kg block slides once F > 24 N. (D) wrong: the ground friction on the 6 kg block only ever equals the inter-block friction (equilibrium).
Ans. (B)
Stream:JEESubject:PhysicsTopic:W.E.P.Subtopic:Work kinetic energy theorem
⏱ 2mℹ️ Source: QB
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