Physiology 3120 Lecture : (Course Code 2130) Module One-Introduction to Physiology

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olivepug245

17 Nov 2011

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Given fn = n/2? vF/Âµ , if the mass density Âµ of a violin string oflength ? is doubled, how should you adjust the tension F topreserve the same tune?

FN +mg +fk +F=0

FN is the normal force,mg is mass and gravitational acceleration which equals toweight, and F is force. Sowhat is fk? Blah I can't believe I don't know this.

a force P pulls on a crate of mass (m) that is in contact with arough surface. W represents the weight of the crate. FN representsthe normal force on the crate, and f represents the frictionalforce.

P= 160 N
f= 80 N
w= 196 N
60 degree angle

a) calculate the net force on the crate in the horizontalarea

B) what is the accerelation of the crate along the surface?

Physiology 3120 Lecture : (Course Code 2130) Module One-Introduction to Physiology

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