A block weighing 4kg is on a plane with an incline of π2 and friction coefficient of 45. How much force, if any, is necessary to keep the block from sliding down?

1 Answer
Mar 15, 2016

F49,05 N

Explanation:

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Ff=Fμ μ=45
Ff=F45
FfG
Object is not slides;
if the friction force is equal or greater than weight of object
45Ffmg
45F49,81
45F39,24
F539,244
F49,05 N