Physics 10-31-23 Friction & Forces on an Incline Problems Review

PHYSICS: Boxes and block, all slipping and sliding… Is it starting to make a little more sense? Here’s a look at some of the problems on an incline that might have a twist. A little extra fun! 🙂

You’re getting it…keep sledding and watch out for net forces!


Photo by Erda Estremera on Unsplash

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7 thoughts on “Physics 10-31-23 Friction & Forces on an Incline Problems Review

  1. Scientists have discovered that marathon runners can actually use their brains as fuel when they run. Because running a marathon takes large amounts of energy, the body needs somewhere else to get energy. Studies show that runners actually depend on the myelin or the fatty tissue bundled around nerve fibers in their brains. These sheaths can decrease and increase depending on your body’s cellular needs. This information could also lead to a solution for people who have lost myelin due to aging or neurodegenerative disease.

    https://www.sciencenews.org/article/brain-tissue-fuel-marathon-runner

  2. Scientists recently discovered that adding colder water into rivers and streams for trout can act as “air conditioning.” When the water gets too warm, trout and other types of fish tend to get stressed and even die. But when the scientists added colder water from a pump, all species of fish flooded to cold spot. They also discovered that it would work the same if they reverted a nearby cold stream instead of using a pump.

  3. A recent study by scientists showed that editing chickens’ ANP32A gene, which produces a protein that avian flu utilizes to spread, greatly improved the chickens’ resistance to the disease. Edited chickens were as healthy as their unedited peers, and in trials that exposed 2 groups of edited and unedited chickens to a mild dose of avian flu, the edited chickens not only suffered less infections, but had a lower chance of spreading the disease to other chickens. However, viruses in the infected edited chickens had adapted to replicate through different proteins, so the scientists are doing further study to see if other genes may need to be edited.
    https://www.sciencenews.org/article/gene-editing-chicken-resistant-bird-flu

  4. Scientists recently discovered that adding colder water into rivers and streams for trout can act as “air conditioning.” When the water gets too warm, trout and other types of fish tend to get stressed and even die. But when the scientists added colder water from a pump, all species of fish flooded to cold spot. They also discovered that it would work the same if they reverted a nearby cold stream instead of using a pump.

    In the first post I forgot to add the URL of the article I used, so this is a repost.

    https://www.sciencenews.org/article/cold-water-river-salmon-fish-climate

  5. As people age, their muscles continue to weaken which makes tasks more difficult to perform. Stem cell biologists at Stanford are working on a way to reverse that or at least slow it down so that the muscles remain strong. They have found that in mice, if one enzyme is prevented from breaking down a certain protein in muscles, that the muscle will retain its strength for much longer.
    https://www.sciencenews.org/article/aging-enzyme-restore-muscle-strength

  6. Scientist have recently discovered the remains of ancient man’s brain in a glass form. Scientist have never seen anything like this before, and his body was preserved from the host ash from the volcanic explosion from Mount Vesuvius. His brain possessed special properties that allowed the vitrification process to take place. His brain was equipped to specially send and receive messages.

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