10.1 – Investigating Conservation of Energy on a Ramp (Leaving Cert Physics): Flashcards

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10.1 – Investigating Conservation of Energy on a Ramp
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Principle investigated in trolley-ramp experiment

Conservation of energy

PE converts to what energy type?

Kinetic energy

Expected result: PE lost vs KE gained

PE lost = KE gained

Equipment that tracks trolley movement

Motion sensor

Formula for loss in PE

msghm_s g h

Formula for gain in KE

12mtotalv2\frac{1}{2} m_{total} v^2

Mass used in KE calculation

Total system mass (trolley + falling weight)

Why raise one end of runway?

So trolley moves at constant speed (compensates for friction)

Number of measurements to record

Five

What motion sensor measures

Distance and velocity of trolley

Total mechanical energy equals

Potential energy + kinetic energy

What happens to scale pan during experiment?

Falls and loses potential energy

What does trolley gain as it moves?

Kinetic energy

Energy cannot be created or destroyed, only...

Converted from one form to another

Assumption for ideal results

Negligible friction and air resistance

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