What kind of friction comes into play:
(a) when a block of wood kept on table moves slowly?
(b) when a block of wood kept on table just tends to move (or slip)?
(c) when a block of wood kept on cylindrical iron rods moves?

(a) When a block of wood kept on the table moves slowly, sliding friction comes into play here.

(b) When a block of wood kept on the table just tends to move (or slip), static friction comes into play here.

(c) When a block of wood kept on cylindrical iron rods moves, rolling friction comes here.

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Updated on: 10-Oct-2022

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