AP EAMCET202319 May 2023Morning ShiftPhysicsWork, Power and EnergyActual
A toy of mass 20 ~g at rest acquires a velocity (3 i -2 j ) ms ⁻¹ in 2 seconds. Then the power of the toy is
Options
- A0.975 ~W
- B0.325 ~W
- C1.3 ~W
- D0.065 ~W
Correct answer
C. 1.3 ~W
Step-by-step solution
Mass of toy, m =20 ~g =0.02 ~kg Velocity, v =(3 i -2 j ) m / s | v |= 9+4 = 13 ~m / s Power of the toy is defined by aligned & P=F v & = mv ^2 t & = 0.02 13 2 =0.13 ~W aligned