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Question 6093
NEET Physics · Medium

Work, Energy & Power: Work-Energy-Power Mixed MCQ

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Work-Energy-Power MixedMediumQuestion 6093

Question

Force F at angle θ above horizontal moves mass m on rough surface (μ) distance d. Work by friction:
  1. A
    −μmgd
  2. B
    −μ(mg−Fsinθ)d
    Correct
  3. C
    −μ(mg+Fsinθ)d
  4. D
    μFcosθ·d

Correct answer

−μ(mg−Fsinθ)d

Explanation

N = mg − Fsinθ. W_friction = −μ(mg−Fsinθ)d.

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