Why Is Steel Marble Faster Than Plastic Marble

The small marble and the larger marble rolled down the ruler at basically the same speed.

Why is steel marble faster than plastic marble.

So after one second the object. On the other hand plastic hdpe and softwood cutting boards are given good scores on maintenance and chip risk which are great for your knives but come at the expense of the durability. Because acid etching leaves a whitish mark it is much more noticeable on colored marble than on. 3 tall containers with lids e g.

For the explanation i am actually going to simplify the probl. Watch the glasses closely. Hold one marble in each hand just above the surface of the liquid in each glass. Glass cutting boards are very hard almost as hard as steel and will not score which is why these boards are notorious for dulling even the best of knives.

Did the marble travel faster as it went farther down the slope. When an object is in free fall gravity increases its velocity by 9 8 m s with every passing second. Since tennis balls and basketballs are quite heavy at least compared to feathers we don t easily notice the effect of air resistance on these although it s still there. As the elevation of the ramp increases so does the average speed of the marble right.

This is due to gravity pulling everything to the ground at 9 8 m s correct. This is why the old gravestones of the midwest are barely legible because acid rain created by factory pollution has dissolved a lot of the calcite in the limestone and marble gravestones. Limestone generally ranks at around a 3 on the scale while marble falls between 3 and 4. For marble kitchen countertops however nussbaum generally recommends sticking with white marble.

The larger marble always goes further in distance than the smaller marble. Drop a marble into each container and screw the lids on firmly. While marble is slightly harder and denser than limestone both rate very low on the mohs scale a rating used to measure the hardness of stones. Be prepared to watch the bottom to see which marble hits first.

The answer is actually a historically very important problem known as the brachistochrone problem and was one of the problems which lead to the development of calculus of variations. Marble and limestone lie at the opposite end of the hardness scale from granite.