Answers
n
1.) Use
Δ
PE=mg
Δ
h to find
potential energy gained so
Δ
PE=5.2kgx9.81m/s
2
x0.80m
n
So…
Δ
PE=40.81J
n
n
2.) W=
Δ
E
T
so..W is also 40.81J