Based on the following passage, what is NCARB’s attitude toward change? One reason that the National Council of Architectural Boards (NCARB) continually revises its national exam for architects is to take into account the evolution of how architecture is practiced. The NCARB does this through a methodical evaluation of developments in the architectural field and then the crafting of new questions that address the most important aspects of these developments.

A) The NCARB resists changes in architectural practice.
B) The NCARB changes its test to reflect all changes in architectural practice.
C)The NCARB uses its test to dictate changes in architectural practice it would like to see.
D)The NCARB changes its test with respect to current architectural practice only after careful study.

a) v = 13.8 m / s , b) a = 95.49 m / s² , c) a force that goes to the center of the carnival ride  and d)   μ = 0.10

Explanation:

For this exercise we will use the angular kinematics relationships and the equation that relate this to the linear kinematics

a) reduce the magnitudes to the SI system

    w = 1.1 rev / s (2pi rad / 1rev) = 6.91 rad / s

The equation that relates linear and angular velocity is

    v = w r

    v = 6.91  2

    v = 13.8 m / s

b) centripetal acceleration is given by

    a = v² / r = w² r

    a = 6.91² 2

    a = 95.49 m / s²

c) this acceleration is produced by a force that goes to the center of the carnival ride

d) Here we use Newton's second law

    fr -W = 0

    fr = W

    μ N = mg

Radial shaft

     N = m a

     N = m w² r

     μ m w²  r = m g

     μ = g / w² r

     μ = 9.8 / 6.91² 2

     μ = 0.10

Explanation:

unlike the threaded fasteners which are used to clamp the machine members, power screws are used to transmit power. common applications of power screws are: screw jacks: to lift weight. lead screw of lathe: for axial movement of tool and its precise positioning.

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