CBSE Class 11-science Physics Work and Energy

• A small spherical object having density 2P is placed inside the liquid of density P and connected to an ideal string of length l whose other end is kept fixed so that the object can move in a vertical cirlcle, minimum speed which must be given at the bottom to just complete the vertical circle.
• when we push the car,workdineyis 0,how
• explain about conservation of energy with problem
• please solve the attached problem
  
• Can o get more number of conceptual questions???
• plz elaborate by figure and step by step question no 5
  
• plz elaborate by figure and step by step question no 4
  
• plz elaborate by figure and step by step question no 2
  
• If the percentage error of momentum of a body is 100%, find the percentage error of the Kinetic energy of the body ising mass and velocity. 
• Calculate the work done in raising a stone of mass 5 kg and specific gravity 3,lying at the bed of a lake through a height of5 km .

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