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Question: Answered & Verified by Expert
A 2 kg brick begins to slide over a surface which is inclined at an angle of 45 with respect to horizontal axis. The co-efficient of static friction between their surfaces is:
PhysicsLaws of MotionJEE MainJEE Main 2024 (04 Apr Shift 2)
Options:
  • A 1.7
  • B 13
  • C 0.5
  • D 1
Solution:
1368 Upvotes Verified Answer
The correct answer is: 1

mgsin45=fLmgcos45=NfL=μsNμs=tan45=1
or
tanθ=μs ( θ is angle of repose)
tan45=μs=1

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