Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Work Power and Energy question

2005 · Shift 0 · Q178
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Work Power and Energy
  5. /2005 · Shift 0 · Q178

Work Power and Energy question

2005 · Shift 0 · Q178

JEE MainPhysicsWork Power and EnergyMCQ+4 / −1
The upper half of an inclined plane with inclination ϕ\phiϕ is perfectly smooth while the lower half is rough. A body starting from rest at the top will again come to rest at the bottom if the coefficient of friction for the lower half is given by
  1. A
    2 cos⁡  ϕ2\,\cos \,\,\phi2cosϕ
  2. B
    2 sin  ϕ2\,sin\,\,\phi2sinϕ
  3. C
     tan⁡  ϕ\,\tan \,\,\phitanϕ
  4. D
    2 tan⁡  ϕ2\,\tan \,\,\phi2tanϕ
PreviousNext

More from Work Power and Energy

  • A body of mass m is accelerated uniformly from rest to a speed v in a time T. The instantaneous power delivered to the body as a function of time is given by2005 · MCQ
  • A spherical ball of mass 20kg is stationary at the top of a hill of height 100m. It rolls down a smooth surface to the ground, then climbs up another hill of height 30m and finally rolls down to a horizontal base at a height of 20m…2005 · MCQ
  • A particle moves in a straight line with retardation proportional to its displacement. Its loss of kinetic energy for any displacement x is proportional to2004 · MCQ
  • A uniform chain of length 2m is kept on a table such that a length of 60cm hangs freely from the edge of the table. The total mass of the chain is 4kg. What is the work done in pulling the entire chain on the table?2004 · MCQ
  • A force F=(5i+3j​+2k)N is applied over a particle which displaces it from its origin to the point r=(2i−j​)m.…2004 · MCQ
  • A body of mass ′m′, acceleration uniformly from rest to ′v1​′ in time T. The instantaneous power delivered to the body as a function of time is given by2004 · MCQ
  • A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particles takes place in a plane. It follows that2004 · MCQ
  • A body is moved along a straight line by a machine delivering a constant power. The distance moved by the body in time ′t′ is proportional to2003 · MCQ