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Each of the gocart’s front wheels weighs 5 lbs and has a
mass moment of inertia of 0.01 slugft
2
.
The two rear wheels
and axle weigh 40 lbs with an I of 0.1 slugft
2
.
The total
weight of the go cart and driver is 240 lbs (including the
wheels).
The CG of the driver and cart (not including the
wheels) is shown in the figure.
If the engine exerts a torque
of 12 ftlbs on the rear axle, what is the gocart’s
acceleration?
Start with the Wheels
RB Kinetics, Use Newton’s second law.
Draw FBD, mad, but of what?
Next write the
equations of motion for each of the wheels.

Do front…
Do FBD
and mad for
the cart body.
EOM.
Problem Type:
Find:
Given:
W
F
= 5 lbs, I
F
= 0.01 slugft
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 Spring '05
 staff
 Moment Of Inertia

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