Question

A total of 4900 J is expended in lifting a 50-kg mass. The mass is raised to a height of

Answer 1

4 answers · Physics 

 Best Answer

PE = mgh 
4900 = 50 x 9.8 x h 
h = 10 meters 

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billrussell42 · 9 years ago

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Everyone got part 1; so I'll skip it. When we go from U = 0 to some V = ? in T = 10 seconds while going S = 5 meters, the average speed is found from S... show more

Engjellushe · 3 years ago

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Gravitational Potential Energy = (Mass) x (Change in Height) 
so 
4900 = 50 x (Change in Height) 
so 
(Change in Height) = 4900/50 = 98 meters

Answer 2

PE = mgh

4900 = 50× 9.8× h

h = 4900/490

h= 10 m