SAT, 26.10.2021 23:00 thalia17

a wood block is placed on a rough surface. the surface starts horizontal, and one end is then raised so that the angle the surface makes with the horizontal gradually increases until, at an angle θ, the block begins to move down the surface, as shown in the figure. from this observation, which of the following can be concluded for angles greater than θ ?

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a wood block is placed on a rough surface. the surface starts horizontal, and one end is then raised...

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