compute the power required by a man to move a 10kg mass so as to change the speed of mass from 10m/s and 20m/s.
Answers
Answered by
3
Solutions
Mass, m = 10 kg
Initial velocity, u = 10 m / s
Final velocity, v = 20 m / s
⇒ 1 / 2 x m x [v²-u²]
Calculations
1 / 2 x 10 x [(20)²-(10)²]
= 5 x (400 - 100)
= 5 x 300
= 1500 J
Power, P = Work done / Time consumed
= 1500 J / 5 s
= 300 J / s or W
Hence, the power required by a man to move a 10 kg mass so as to change the speed of mass from 10 m / s to 20 m / s in seconds is 300 J / s or W.
Mass, m = 10 kg
Initial velocity, u = 10 m / s
Final velocity, v = 20 m / s
⇒ 1 / 2 x m x [v²-u²]
Calculations
1 / 2 x 10 x [(20)²-(10)²]
= 5 x (400 - 100)
= 5 x 300
= 1500 J
Power, P = Work done / Time consumed
= 1500 J / 5 s
= 300 J / s or W
Hence, the power required by a man to move a 10 kg mass so as to change the speed of mass from 10 m / s to 20 m / s in seconds is 300 J / s or W.
Anonymous:
Can i have brainliest answer
hey can u tell me hw did u got the time as 5 secs !
it is given in the question
^^
wht !! but hw i m not able to see that y !!
i forgot type
i forgot to type
hmm that's y i was thinking ! kk no prob :)
i forgot to type
very funny :")
Similar questions