Question

A 75 kg man is riding an escalator in a shopping mall.The escalator moves the man at a constant velocity from ground floor level to the floor above,a vertical height of 4.60m.What is work done by a,the gravitational force and b,by the escalator

Answer 1

Answer

work done by a,the gravitational force

$W =mgh \\=75*9.81*4.60\\=3,384.45 J$