Question #e1796

1 Answer
Gaya3
Oct 19, 2017

See below

Explanation:

What do we know:

  • #1050"feet"=320.04m#
  • #143"lbs"=64.86kg#
  • #g=9.8m/s^2#
  • #9"min "30s=9xx60+30=570s#

According to the information, the only energy gained (work done) is Gravitational potential energy.

#"Work"=mgh#
#=64.86kgxx320.04mxx9.8m/s^2#
#=203426.4J#

#"Power"="Work"/"time"#

#=(203426.4J)/(570s)#

#=356.9"Watts"#

#P_(hp)= P_W/745.6998#

#=(356.9W)/745.6998=0.478611"hp"#

In ft-lbs #=15794.16#

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