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

Center of Mass question

2019 · 11 Jan · Shift 1 · Q50
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Center of Mass
  5. /2019 · 11 Jan · Shift 1 · Q50

Center of Mass question

2019 · 11 Jan · Shift 1 · Q50

JEE MainPhysicsCenter of MassMCQ+4 / −1
A body of mass 1 kg falls freely from a height of 100 m, on a platform mass 3 kg which is mounted on a spring having spring constant k = 1.25 ×\times× 106 N/m. The body sticks to the platform and the spring's maximum compression is found to be x. Given that g = 10 ms–2 , the value of x will be close to :
  1. A
    8 cm
  2. B
    4 cm
  3. C
    40 cm
  4. D
    80 cm
PreviousNext

More from Center of Mass

  • A particle of mass m is moving in a straight line with momentum p. Starting at time t = 0, a force F = kt acts in the same direction on the moving particle during time interval T so that its momentum changes from p to 3p. Here k is a…2019 · MCQ
  • A man (mass = 50 kg) and his son (mass = 20 kg) are standing on a frictionless surface facing each other. The man pushes his son so that he starts moving at a speed of 0.70 ms–1 with respect to the man. The speed of the man with respect to…2019 · MCQ
  • Three particles of masses 50 g, 100 g and 150 g are placed at the vertices of an equilateral triangle of side 1 m (as shown in the figure). The (x, y) coordinates of the centre of mass will be : Includes diagram2019 · MCQ
  • A simple pendulum, made of a string of length ℓ and a bob of mass m, is released from a small angle θ0​. It strikes a block of mass M, kept on a horizontal surface at its lowest point of oscillations, elastically. It…2019 · MCQ
  • The position vector of the centre of mass rcm​ of an asymmetric uniform bar of negligible area of crosssection as shown in figure is : Includes diagram2019 · MCQ
  • An alpha-particle of mass m suffers 1-dimensional elastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing, 64% of its initial kinetic energy. The mass of the nucleus is2019 · MCQ
  • A proton of mass m collides elastically with a particle of unknown mass at rest. After the collision, the proton and the unknown particle are seen moving at an angle of 90o with respect to each other. The mass of unknown particle is :2018 · MCQ
  • The mass of a hydrogen molecule is 3.32 × 10-27 kg. If 1023 hydrogen molecules strike, per second, a fixed wall of area 2 cm2 at an angle of 45o to the normal, and rebound elastically with a speed of 103 m/s, then the pressure on…2018 · MCQ