Questions asked by rishab

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• An aeroplane flies 400 m due north and then 300 m due south and then flies 1200 m upwards, the net displacement is ?
  
• A particle is dropped from the top of a tower h meter high and simultaneously a particle is projected upwards from bottom. They meet when the upper one has descended 1/n of the distance. find the initial velocity of the lower particle?
  
• In a water- tank test involving the launching of a small model boat, the model's initial horizontal velocity is 6 m/s and its horizontal acceleration varies linearly from -12 m/s2 at t=0 to -2 m/s2 at t=t1 and then remains equal to -2 m/s2 until t=1.4 ?
  
• A wheel of radius 1 meter rolls forward half a revolution on a horizontal ground. The magnitude of the displacement of the point of the wheel initially in contact with the ground is ?
  
• Two identical ladders are arranged as shown in the figure, resting on a horizontal surface. Mass of each ladder is M and length L. A block of mass m hangs from the apex point P. If the system is in equilibrium, find direction and magnitude of friction?
  
• Two identical ladders are arranged as shown in the figure, resting on a horizontal surface. Mass of each ladder is M and length L. A block of mass m hangs from the apex point P. If the system is in equilibrium, find direction and magnitude of friction?