For example, head extension is a good example of a first-class lever system. Here, neck and back muscles apply an force to move the head. The weight of the head it the load, and the fulcrum is the joint between the skull and the vertebrae.n a second-class lever, the load is located between the force and the fulcrum. A wheel barrow is great example of a second-class lever system. Here, the wheel is the fulcrum, or the pivot point, the weight is the load and lifting the handles applies the force to move the load.
You can continue to enjoy all of the benefits of Prime throughout your 30-day free trial. Should you decide to activate your Prime membership through Sprint, your Prime free trial will end, and your Prime membership will begin through Sprint. You will be billed $10.99/month on your Sprint invoice. (excludes taxes and surcharges)
Amazon (AMZN) announced the annual membership will now cost $99 a year, up from $79. A student membership will cost $49 annually. In February, Amazon said it was considering raising the price to $119 a year. Prime members get two-day shipping on a large number of Amazon items at no extra cost, plus the ability to borrow Kindle books and stream movies and television shows. The company said blamed the increase on increase fuel and shipping costs.