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

2020 · 3 Sep · Shift 2 · Q43
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. /2020 · 3 Sep · Shift 2 · Q43

Work Power and Energy question

2020 · 3 Sep · Shift 2 · Q43

JEE MainPhysicsWork Power and EnergyNumerical+4 / −1
A block starts moving up an inclined plane of inclination 30o with an initial velocity of v0 . It comes back to its initial position with velocity v02{{{v_0}} \over 2}2v0​​. The value of the coefficient of kinetic friction between the block and the inclined plane is close to I1000{I \over {1000}}1000I​. The nearest integer to I is ‾\underline{\hspace{2cm}}​.
Numerical answer
PreviousNext

More from Work Power and Energy

  • A particle is moving unidirectionally on a horizontal plane under the action of a constant power supplying energy source. The displacement (s) - time (t) graph that describes the motion of the particle is (graphs are drawn schematically…2020 · MCQ
  • A person pushes a box on a rough horizontal plateform surface. He applies a force of 200 N over a distance of 15 m. Thereafter, he gets progressively tired and his applied force reduces linearly with distance to 100 N. The total distance…2020 · MCQ
  • A body of mass 2 kg is driven by an engine delivering a constant power of 1 J/s. The body starts from rest and moves in a straight line. After 9 seconds, the body has moved a distance (in m) ​.2020 · Numerical
  • If the potential energy between two molecules is given by U = −r6A​+r12B​, then at equilibrium, separation between molecules, and the potential energy are :2020 · MCQ
  • A particle (m = 1 kg) slides down a frictionless track (AOC) starting from rest at a point A (height 2 m). After reaching C, the particle continues to move freely in air as a projectile. When it reaching its highest point P (height 1 m),… Includes diagram2020 · Numerical
  • A 60 HP electric motor lifts an elevator having a maximum total load capacity of 2000 kg. If the frictional force on the elevator is 4000 N, the speed of the elevator at full load is close to : (1 HP = 746 W, g = 10 ms-2)2020 · MCQ
  • An elevator in a building can carry a maximum of 10 persons, with the average mass of each person being 68 kg, The mass of the elevator itself is 920 kg and it moves with a constant speed of 3 m/s. The frictional force opposing the motion…2020 · MCQ
  • Consider a force F=−xi+yj​ . The work done by this force in moving a particle from point A(1, 0) to B(0, 1) along the line segment is : (all quantities are in SI units) Includes diagram2020 · MCQ