NEET2019PhysicsWork, Power and EnergyActual
Initially spring is in its natural length. Now block of mass 0.25 ~kg is released, then find out maximum force by system on the floor.
Options
- A15 ~N
- B20 ~N
- C25 ~N
- D30 ~N
Correct answer
C. 25 ~N
Step-by-step solution
By using work - energy theory on (0.25) kg aligned & 1 2 k x^2=m g x, where m=2 ~kg & k x=2 m g=2 0.25 10=5 ~N & N=k x+2 10=5+20=25 ~N aligned