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Motorized Cart<br />
Motorized.Cart<br />
ME-9781<br />
P .Battery.powered/adjustable.speeds<br />
P .External.power.jack<br />
P .Climbs.up.a.30°.slope<br />
P .Durable.construction<br />
On/Off.<br />
Switch<br />
Speed.<br />
Adjustment<br />
External.Power.<br />
Jack<br />
Screw.Holes<br />
For mounting accessories.<br />
The tank-like molded casing and a rugged internal gear mechanism<br />
are built for the harshest student environment. Runs on four<br />
“C” batteries and has variable speed adjustment knob. External<br />
power input accepts phone plug cable (included) to power the car<br />
using a DC power supply, or a programmable power supply such<br />
as the Xplorer GLX Power Amplifier (p. 7). See page 25 for more<br />
applications.<br />
Four.“C”.Batteries<br />
(not included)<br />
Strong.Traction<br />
Rear rubber wheels.<br />
Tow.Hook<br />
Front and back.<br />
Front.Wheels<br />
Compatible with<br />
Dynamics Tracks.<br />
Order Information:<br />
Motorized Cart........................................................................ME-9781<br />
Motorized Cart Efficiency<br />
P .Convert.electrical.energy.to.mechanical.work<br />
P .Measure.the.efficiency.of.a.real.system<br />
Curved.PAStrack<br />
Use the Motorized Cart (ME-9781) to study the conversion of electrical<br />
energy to mechanical work. Measure the energy delivered to the cart’s<br />
electric motor, and compare to the work the cart does against gravity<br />
climbing a ramp. Investigate how varying the parameters (such as the motor<br />
voltage and amount of weight lifted) changes the efficiency of the system.<br />
In this experiment the Xplorer GLX® hand-held data logger controls<br />
the output voltage of the Power Amplifier, and records all<br />
the data, including power delivered to the motor.<br />
Motorized.<br />
Cart<br />
External.<br />
Power.<br />
Cable<br />
Xplorer.GLX®<br />
PAStrack<br />
GLX.Power.<br />
Amplifier<br />
Equipment Shown:<br />
Motorized Cart........................................ME-9781<br />
PAStrack.....................................................ME-6960 p. 28<br />
Curved PAStrack...................................ME-6841 p. 28<br />
Xplorer GLX...............................................PS-2002 p. 4<br />
GLX Power Amplifier.........................PS-2006 p. 4<br />
250g Mass..................................................ME-6756<br />
Base and Support Rods...................See page 109<br />
The above graph shows effect of increasing motor voltage<br />
on the efficiency, and the graph at left shows the<br />
efficiency as a function of load lifted. The efficiency is<br />
the ratio of the work done lifting the load divided by the<br />
electrical energy used.<br />
www.pasco.com/engineering<br />
29
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