BITSAT2010PhysicsWork, Power and EnergyActual
The potential energy for a force field F is given by U(x, y)= (x+y) . The force acting on a particle at position given by coordinates (0, / 4) is -
Options
- A- 1 2 ( i + j )
- B1 2 ( i + j )
- C( 1 2 i + 3 2 j )
- D( 1 2 i - 3 2 j )
Correct answer
B. 1 2 ( i + j )
Step-by-step solution
F _ x =- U x = ( x + y ) array l F _ y =- U x = ( x + y ) . F _ x = ( x + y ) ]_ (0, / 4) = 1 2 . ~F _ y = ( x + y ) ]_ (0, / 4) = 1 2 F = 1 2 [ i + j ] array