If a cubical block is moving down a slide, the type of friction acting on the block is
A
rolling friction
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B
static friction
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C
sliding friction
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Solution
The correct option is C sliding friction Since a cuboidal box is sliding, it can be inferred that the box must be slipping on the slide. Therefore sliding friction is acting on the box. Since the box is moving downward, the direction of frictional force is upwards on the box.