Physics, 27.10.2020 15:50 sammybrain
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 ?
A) there is no frictional force on the block.
B) The gravitational force is equal to the frictional force.
C)The component of the gravitational force along the surface is greater than the frictional force.
D)The normal force is equal to the gravitational force.
E )The component of the normal force along the surface is greater than the gravitational force.
Answers: 1
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