<PRE><B>Question 326883</B>
This is a borderline algebra problem. Try Yahoo Answers Physics forum for more appropriate help. 
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The amount of work needed is mgh={{{525*9.8*25=128625}}} N-m.
The power available is {{{25000}}} W. 
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1 Watt=1 N-m/s
1 Watt-s=1 N-m
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{{{P*t=W}}}
{{{25000*t=128625}}}
{{{t=128625/25000}}}
{{{t=5.145}}} sec</PRE>