Physics Grade -10 (Science - New Course )
Physics Unit - Topics 7 - Force and Motion 8 - Pressure 9 - Heat 10 - Wave 11 - Electricity And Magnetism Unit - 7 Mation and Force Force : -A physical quantity which change the state of an object is called force. Its S.I. unit (N). It is a vector quantity . Eg. Pulling force, Gravitational force etc . Force(F) = Mass(m) × acceleration(a) or mass(m )× acceleration due to gravity (g) Gravitation or Gravitational force:- The force of attraction between any two heavenly bodies is called gravitational force. Its S. I. unit is Newton(N) . Gravitational force(F) = Gm 1 m 2/ d 2 Where m 1 =mass of 1 st body ,m 2= mass of 2 nd body ,d=distance between two heavenly bodies. Factors affecting gravitational force:- 1)Mass of 2 heavenly bodies 2)Distance between two object from their center Newton’s law of gravitation:- The force of attraction between two heavenly is directly