Recent content by DNwein

True, maybe he is asking for the velocity when the bottle reaches the ground, if so what do you think the angle that yields the greatest horizontal velocity is i would have thought 45 degrees? but apparently it needs a less steep slope. but if you have a mass and place it higher up the slope (at...

That was my first thought haruspex, that it could be the angle that yields the velocity that it travels before it slides instead of rolls, but he's not telling us much.

Well the bottle we are using has a maximum weight of 400g on the scales and he said that it should be more than 30° of incline but less than 40°(the 'optimal' angle), we are just letting it go at the top of a 1.36m plank of wood set at an incline(and it just rolls down), if this helps.

So our teacher explained to us that there is an optimal angle at which a bottle can be rolled down an incline to achieve 'maximum' velocity but I'm not sure how to find the equation to work this out mathematically rather than using just trial and error. I'm pretty sure that it involves...