Why is it important to spread your legs while standing on a bumpy bus?

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Spreading your legs while standing in the aisle of a bumpy bus is crucial for maintaining balance and stability. A wider stance increases your base of support, which helps keep your center of mass aligned above it during sudden movements. The bus's constant jerking can easily disrupt balance, making a wider stance essential to prevent falls. Standing with feet close together raises the risk of injury if the bus abruptly stops or turns. Overall, this practice enhances safety and comfort during bumpy rides.
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Why one needs to keep ones legs far apart when he has to stand in the aisle of a bumpy riding bus?
 
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In order to stay upright, your center of mass has to stay above your base. Placing your feet farther apart makes your base- the area between your feet- larger. The reason you need to do this on a bumpy bus but not when you are standing on the ground is that your center of mass moves more on the bus.
 


Keeping one's legs far apart while standing in the aisle of a bumpy bus is important for maintaining balance and stability. The constant movement and jerking of the bus can easily throw someone off balance, especially if they are standing in a narrow space. By spreading one's legs apart, it creates a wider base of support and allows for better weight distribution, making it easier to withstand the sudden movements of the bus. Additionally, standing with one's feet close together can increase the risk of falling or getting injured if the bus suddenly stops or turns. Overall, keeping one's legs far apart is a simple but effective way to stay safe and comfortable while travelling on a bumpy bus.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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