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Find an expression for the magnitude of the horizontal force FinFIGUREP7.49 for which m1 does not slip either up or down along the wedge. All surfaces are frictionless.

Short Answer

Expert verified

An expression for the magnitude of the horizontal forceF=(m1+m2)gtan()

Step by step solution

01

Given information 

the horizontal force acting on the large sliding wedge block isF鈬赌

mass of the small sliding block.localid="1649764530848" m1

mass of the large sliding wedge block.m2

the inclination angle of wedge block is

All surfaces are frictionless.

02

Explanation

Resolving horizontal and vertical forces for the smaller block:

Resolving horizontal forces iFi,x=0

role="math" localid="1649765390956" F1,x-W1,x=0m1acos()=m1gsin()a=gtan()(I)

The above equation (I)gives the expression for acceleration of mass m1.

Similarly, resolving vertical forces iFi,y=0to get the normal force acting on the smaller block.

FNcos()-m1g=0FN=m1gcos()(II)

Now, find the horizontal forces for the system,

F鈬赌=(m1+m2)a

Substituting the equation (I)in the above expression, we get

F鈬赌=(m1+m2)gtan()

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