Thanks for the help,(adsbygoogle = window.adsbygoogle || []).push({});

i think i'm getting it, but i still have doubts, anyway, here's the problem:

A wedge of 15° is pushed under a tube of 50 kg as shown in fig 1. [tex] \mu_S = 0.20 [/tex] in all the surfaces. Determine the required force P to move the wedge.

answer is [tex] P &= 283 N\leftarrow [/tex]

but i get 377.73 N, please give some hints of what i'm doing wrong

what i'm doing is (please refer to attachments to see the fbd's)

[tex] \arctan\mu_S = \theta_S[/tex]

[tex] \arctan0.20 = \theta_S[/tex]

[tex] 11.3 &= \theta_S [/tex]

[tex] R &_B=\frac{W\sin101.3}{\sin52.4} [/tex]

[tex] R &_B=607.09 N [/tex]

and in the second system:

[tex] P &=\frac{607.09N\sin37.6}{sin78.7} [/tex]

which yields:

[tex] P &=377.3N\leftarrow [/tex]

please help!!

thanks in advance for any help you can give me

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# Homework Help: Friction: Static Cylinder And Ramp Problem: Again!

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