- #1
Skysong12
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Homework Statement
A construction worker passes a brick to another worker by pushing it across a wooded floor. the brick has a mas of 2.7kg. The force required making the brick move with acceleration of 0.42m/s2 is 28 N. What is the co-efficient of kinetic friction acting on the brick?
The Attempt at a Solution
FN=Fg
= mass X acceleration
=2.7kg X 0.42m/s2
=1.134 N Fkf= μk X FN
μk = Fkf [itex]/[/itex] FN
= 28N [itex]/[/itex] 1.134N
=24.69
I'm pretty sure I got the acceleration part wrong. What am I supposed to do to find the normal force?