a 200N black is at rest on a 30° incline the coefficient of friction (0.2) compute the value of a horizontal force P that will cause motion up the incline:

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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a 200N black is at rest on a 30° incline the coefficient of friction (0.2) compute the value of a horizontal force P that will cause motion up the incline:

Ex2.: a 200N black is at rest on a 30° incline the coefficient of friction (0.2)
compute the value of a horizontal force P that will cause motion up the incline:
{Fy = 0
FN – Py – Wy = 0
FN = Psin30 + 200cos30
w,
= 0.5P + 173.2
(1)
Ff = M.FN
= 0.2(0.5P +173.2)
= 34.64 + 0.1P
{Fx = 0
Px- Ff Wx = 0
Px = Ff + Wx
Pcos30 = (34.64 +0.1p) + 200sin30
P = 176N
Transcribed Image Text:Ex2.: a 200N black is at rest on a 30° incline the coefficient of friction (0.2) compute the value of a horizontal force P that will cause motion up the incline: {Fy = 0 FN – Py – Wy = 0 FN = Psin30 + 200cos30 w, = 0.5P + 173.2 (1) Ff = M.FN = 0.2(0.5P +173.2) = 34.64 + 0.1P {Fx = 0 Px- Ff Wx = 0 Px = Ff + Wx Pcos30 = (34.64 +0.1p) + 200sin30 P = 176N
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