Which type of friction-static or kinetic-plays a role in (a) holding a pencil, (b) chalk making marks
Question:
Which type of friction-static or kinetic-plays a role in
(a) holding a pencil,
(b) chalk making marks on a chalkboard,
(c) skiing downhill,
(d) polishing a metal surface, and
(e) walking (without sliding) down an incline?
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The motion of the two surfaces in contact relative to each other determines the typ...View the full answer
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