Question

How big should the ice floe a = 0.3 m thick be to hold the weight of a 500 kg polar bear on the water? The ice density is dk = 917 kg / m3 and the water density is dw = 1027 kg / m3

Answer 1

Answer:

A stick of mass m and length / is pivoted at one

end and is displaced through an angle theta . The

increase in potential energy is

(0- theta )

(1) mg

(1 - cos 0)

(2) mg *(1 + cose)

(3) mg

(1 - sin o)

(4) mg

(1 + sino)

2

7962

Explanation:

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