Iorek Byrnison weighs almost 2 tons (2000kg) when in his armour.The Amber Spyglass said:
Iorek fights in this armour with little to no affect on his stamina.
Iorek ran for a day in this armour.The Northern Lights said:
Polar bears can run at speeds of 40km/h, or 11.1111111m/s. Entering those values through the kinetic energy calculator and we get 123456.78987654322 joules.The Northern Lights said:
Final Results
Iorek Byrnison's strength = >123456.79 joules