College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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I need help with this practice Physics question

You need to move a hunk of gold across a river by placing it on top of a makeshift raft, which is constructed from a 30 kg piece of wood with density Paood = 500 kg/m³. The wood floats on the water, which has a density Pwater = 1000kg/m³. Gold Wooden raft (a) What is the maximum mass of gold you could place on top of the piece of wood so that the wooden raft is just barely submerged? Wooden raft Gold (b) The raft tipped over, but you thought to tie the gold to the raft, just in case. Now the gold is dangling underwater via a string. What is the minimum mass of gold, hung underwater from the raft by a string, that will cause the wood and the stolen gold to sink? The density of gold is 20,000 kg/m³.
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Transcribed Image Text:You need to move a hunk of gold across a river by placing it on top of a makeshift raft, which is constructed from a 30 kg piece of wood with density Paood = 500 kg/m³. The wood floats on the water, which has a density Pwater = 1000kg/m³. Gold Wooden raft (a) What is the maximum mass of gold you could place on top of the piece of wood so that the wooden raft is just barely submerged? Wooden raft Gold (b) The raft tipped over, but you thought to tie the gold to the raft, just in case. Now the gold is dangling underwater via a string. What is the minimum mass of gold, hung underwater from the raft by a string, that will cause the wood and the stolen gold to sink? The density of gold is 20,000 kg/m³.
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