Question

A 75.0 kg firefighter climbs a flight of stairs 28.0 m high .how much work does he do

Answer 1

$\huge\bold\red{HOLA}$

mass of firefighter: m=65.0kg

height of stairs: h= 20.0 m

work: W=?

W=FNdcosθ

W=mghcosθ

W=(65.0kg)(9.80m/s2)(20.0m)(cos(0))

W= 12740J

W=1.27 x104J

Answer 2

Answer:

Explanation:

Mass =75 kg

Height =20m

g=10m/s

Work=mgh

=75×20×10

=15000J