AP EAMCET2015PhysicsWork, Power and Energy
A man of weight 50 ~kg carries an object to a height of 20 ~m in a time of 10 ~s . The power used by the man in this process is 2000 ~W , then find the weight of the object carried by the man (take, g=10 ~ms ⁻² )
Options
- A100 kg
- B25 kg
- C50 kg
- D10 kg
Correct answer
C. 50 kg
Step-by-step solution
aligned & P = w / t & w = p t & ( m + M ) gh =2000 10 & ( m +50) 200=2000 10 & m +50=100 & m =50 ~kg aligned