Respuesta :
Answer:
Total change in energy = 31 KJ.
Explanation:
Mass m=25 kg
Height h = 1 m
Initial velocity = 0
Final velocity = 50 m/s
Energy at initial condition
[tex]E_1=mgh+\dfrac{1}{2}mv^2[/tex]
[tex]E_1=25\times 10\times 1+0[/tex]
[tex]E_1=250\ J[/tex]
Energy at final condition
[tex]E_2=0+\dfrac{1}{2}\times 25\times 50^2[/tex]
[tex]E_2=31250\ J[/tex]
So the change in energy = 31250 -250 J
The total change in energy = 31000 J
Answer:
Change in energy will be 31.25 KJ
Explanation:
We have given mass of the piston = 25 kg
Initial velocity u = 0 m/sec
Final velocity v = 50 m/sec
Kinetic energy is given by [tex]KE=\frac{1}{2}mv^2[/tex]
We have to find the change in energy
So change in energy = final KE - initial KE
[tex]\Delta E=\frac{1}{2}m(v^2-u^2)[/tex]
[tex]\Delta E=\frac{1}{2}25\times (50^2-0^2)=31250j=31.25KJ[/tex]
So change in energy will be 31.25 KJ
