How could you reduce the force needed to do work with a lever?

I think

it works by reducing the amount of force needed to move an object or left the load

it does this by increasing the distance. it make the work easier by spreading out the effort over a longer distance

electrical potential energy =0.072 j

explanation:

electrical potential energy is given by

u= q δv

q= charge=6 c

δv= potential difference and is given by

δv= e d

e= electric field

d= distance=5 mm=0.005 m

δv=2.4 (0.005)=0.012 v

now electric potential energy= u= q δv

u=6 (0.012)

u=0.072 j

gravitational energy

electrical energy

kinetic energy

ligh energy