Applied Mechanics and Graphic Statics MCQs with answers Page - 3

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Q. A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is

  • (A) n rpm
  • (B) n/2 rpm
  • (C) n/4 rpm
  • (D) 2n rpm

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Q. A cube on a smooth horizontal surface

  • (A) Cannot be in stable equilibrium
  • (B) Cannot be in neutral equilibrium
  • (C) Cannot be in unstable equilibrium
  • (D) Can be in any of these states

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Q. A disc of mass 4 kg, radius 0.5 m and moment of inertia 3 kgm2 rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is

  • (A) 50 J
  • (B) 150 J
  • (C) 200 J
  • (D) 400 J

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Q. A flywheel of moment of inertia 20 kgm is acted upon by a tangential force of 5 N at 2 m from its axis, for 3 seconds. The increase in angular velocity in radian per second is

  • (A) 43497
  • (B) 43499
  • (C) 2
  • (D) 3

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Q. A force P of 50 N and another force Q of unknown magnitude act at 90° to each other. They are balanced by a force of 130 N. The magnitude of Q is

  • (A) 60 N
  • (B) 80 N
  • (C) 100 N
  • (D) 120 N

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