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Sagot :
Here's the solution,
A.) calculate work done :
we know,
[tex]weight \: = mass \times acceleration[/tex]
- [tex]weight = 10 \times 10[/tex]
- [tex]weight = 100 \: Newtons[/tex]
And,
[tex]work \: done = force \times dispacement[/tex]
- [tex]work \: done = 100 \: \times \: 20[/tex]
- [tex]work \: done = 2000 \: joules[/tex]
B.) find power :
[tex]power = \dfrac{work \: done}{time} [/tex]
- [tex] power = \dfrac{2000}{2} [/tex]
- [tex]power = 1000 \: watt[/tex]
Answer:
work done=2000J and power=1000w
Explanation:
(a) Work done= Gravitational potential energy
W=mgh
Data,
m=10kg
h=20m
g=10N/kg
W=10kg*10N/kg*20m
W=2000J or 2kJ
(b). power=work done/time
P=2000/2
P=1000w
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