A polar bear of mass 436 kg stands on an ice floe 58.10 cm, Ask an Expert

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Q1. A polar bear of mass 436 kg stands on an ice floe 58.10 cm thick. What is the minimum area of floe that will just support the bear in saltwater of density of 1030 kg/m3? The specific gravity of ice is 0.88.

Q2. Cannon has a barrel 9.30 m long and fires a 3.60 kg projectile with the muzzle velocity of 89.8 m/s. What is the average force (in N) on the projectile?

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