Why is a tapered water glass with a narrow base easier to tip over than a glass with straight sides? Does it matter whether the glass is full or empty?
Solution 17DQ A tapered narrow glass has its center of gravity towards its upside, because its bottom portion is relatively narrower than the upper portion.. When the glass is full the center of gravity moves even further up. Therefore, it may be unstable because of such a high location of the center of gravity and tends to tip over. A straight empty glass has its center of gravity at the middle of the glass. That is why it is more stable. Even if it is filled and the center of gravity gets changed by an amount, it is stable because of its uniform diameter. For a tapered glass, it certainly matters whether it is full or empty. Full glass will have its center of gravity moving upward and making the glass unstable resulting in tip over. An empty glass will have its center of gravity more toward its bottom and hence will be more stable than a full glass.