The parliament building tower clock in london, has hour and minute hands with lengths of 2.70 m and 4.50 m and masses of 60.0 kg and 100 kg, respectively. calculate the total angular momentum of these hands about the center point. treat the hands as long, thin uniform rods.

Explanation:

Given

length of hour hand is 2.7m

length if minute hand is 4.5m

And Moment of inertia of a rod about its one of a end

for hour hand is

Angular speed for minute hand

Angular moment(L) is given

For hour hand

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.