The test rig shown was developed to perform fatigue testing on fitness trampolines. A motor drives the 9-in.-radius flywheel
AB
, which is pinned at its center point
A
, in a counterclockwise direction. The flywheel is attached to slider
CD
by the 18 -in. connecting rod
BC
. The "feet" at
D
should hit the trampoline twice every second, at the instant when
\theta =30\deg
. Determine the velocity of
D
. The velocity of
D,%
media:formula387.mml%, is in./s ( (Click to select)
?
)

Question

The test rig shown was developed to perform fatigue testing on fitness trampolines. A motor drives the 9-in.-radius flywheel

AB

, which is pinned at its center point

A

, in a counterclockwise direction. The flywheel is attached to slider

CD

by the 18 -in. connecting rod

BC

. The "feet" at

D

should hit the trampoline twice every second, at the instant when

\theta =30\deg

. Determine the velocity of

D

. The velocity of

D,%

media:formula387.mml%, is in./s ( (Click to select)

?

)

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