Assignment NEXT ALL SCREEN PRINTER VERSION BACK In the figure,a 1.23 g ice Rake

Question

Assignment NEXT ALL SCREEN PRINTER VERSION BACK In the figure,a 1.23 g ice Rake is released from the edge of a hemispherical bowl whose radius r is 17.0cm. The flake-bowl contact done on the flake by the gravitational force during during that descent? (c) If that potential energy is taken to be zero at the bottom of the bowl, what is its value when the flake is released? (d)I release point, what is its value when the flake reaches the bottom of the bowl is frictionless. (a) How much work is the ñiake's descent to the bottom of the bowi? (b) What is the change in the potential energy of the flake-Earth system is taken to be zero at the URCES ice flake is released from the edge of a hemispherical bowl whose radius ris 17.0 cm·The flake-bowi contact is frictionless. (a) Ire flake lem lem lem

Explanation / Answer

a) Work done on flake by weight (gravity) W= U = (U f Ui)

Uf = 0

W= m*g*h
=0.00123*9.81*0.17 = 2.05x10^-3 J

b) change in potential energy of flake-Earth system = W = -Uf = -2.05x10^-3 J

c) if PE = 0 at bottom then PE at top = mgh = 2.05x10^-3 J

d) If PE = 0 at top the PE at bottom = -mgh = -2.05x10^-3 J

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