Posted by HELP!!! on Wednesday, September 26, 2007 at 7:01pm.
you need to move a 500 kg crate of gazelle food from the garage along the 42 meter hall to the kitchen. If you apply a force of 1000 N at a 37 degree angle to the horizontal. How long will it take to move to the kitchen?(coefficient of static friction=.15, coefficient of kenetic friction=.10)

PHYSICS  bobpursley, Wednesday, September 26, 2007 at 7:37pm
First of all, find the components of the pushing force;
Pushing down=1000sin37
pushing forward=1000sin37
friction force = mu*forcenormal
= mu(1000sin37 + mass*g)
net force= m*acceleration solve for acceleration.
then, knowing acceleration, and distance
Vf^2= 2 a * d
solve for Vf.
timetogetkitchen= d/(vf/2)
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