NEET2016PhysicsWork, Power and EnergyActual
A particle moves from a point - 2 i ^ + 5 j ^ to 4 j ^ + 3 k ^ when a force of 4 i ^ + 3 j ^ N is applied. How much work has been done by the force?
Options
- A8     J
- B11     J
- C5 J
- D2     J
Correct answer
C. 5 J
Step-by-step solution
S → = r → 2 - r → 1 = 4 j ^ + 3 k ^ - -   2 i ^ + 5 j ^ = 2 i ^ - j ^ + 3 k ^ F → = 4 i ^ + 3 j ^ W =   F → .   s → = 8 - 3 = 5   J