Cylinder race down a ramp : Différence entre versions

Version actuelle datée du 28 août 2015 à 14:41

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PIRA index: 1Q10.40

The size, weight, and mass distribution of a cylinder influences its moment of inertia and determines the speed at which it will roll down a ramp.

Place the two contestants at the top of the track behind the stopper. Lift the stopper to start the race.

Possible match-ups are

1) cylinders have the same mass but one is solid and the other is hollow.

2) cylinders have the same shape but different masses.

3) cylinders have the diameter but one is solid and the other is hollow.

4) cylinders have the same diameter and mass but their mass distribution is different (one central and one around the edge).

incline, plane, ramp, cylinder, race, roll, moment of inertia

@@ Ligne 5 : / Ligne 5 : @@
 ==Description==
-The weight and mass distribution of a cylinder influences its moment of inertia and determines the speed at which it will roll down a ramp.
+The size, weight, and mass distribution of a cylinder influences its moment of inertia and determines the speed at which it will roll down a ramp.
 ==Equipment==
@@ Ligne 16 : / Ligne 16 : @@
 Possible match-ups are
-) cylinders have the same mass but in solid and one is hollow.
+) cylinders have the same mass but one is solid and the other is hollow.
 ) cylinders have the same shape but different masses.
-) cylinders have the diameter but one of is solid and the other is hollow.
-) cylinders have the same diameter and mass but their mass distribution is different (one centred and one around the edge).
+) cylinders have the diameter but one is solid and the other is hollow.
+) cylinders have the same diameter and mass but their mass distribution is different (one central and one around the edge).
 ==Keywords==
@@ Ligne 29 : / Ligne 32 : @@
 File:1Q10.40_2.JPG|Figure2
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