Solve the equations
1
2
mv2 +
1
2
Iω2 = mgh
and
v = rω
for the speed v using substitution, given that
I = mr2
and
h = 4.20 m.
(Note that mass m and radius r will both cancel, so their numerical values aren't required.)
1
2
mv2 +
1
2
Iω2 = mgh
and
v = rω
for the speed v using substitution, given that
I = mr2
and
h = 4.20 m.
(Note that mass m and radius r will both cancel, so their numerical values aren't required.)