Answer Happy

You pull hard on a strong, thick spring attached to the wall. Imagine the situation, and you probably realize that the spring is pulling hard on you as well. You may have to lean against the force. When is the force with which the spring pulls on you greater than your force on the spring? When you are pulling your end of the spring away. Never. When the spring is stronger than you. Sometimes when your end of the spring is accelerating while stretching. When the spring is pulling you toward the wall.. Question 2 3 pts

The following is information of a cylinder. Calculate its density in g/cm3. (There's no guarantee that the answer will be anything resembling a density in nature.) • length: 3 cm • diameter: 2 cm mass: 225 grams

You measure the density of a material to be 4.93 g/cm3. The real density is 4.89 g/cm3. Calculate your percent error. Don't round to a single figure. To check that you are calculating it right, I require your answer to be within 10% of the correct answer. For example, if the correct percent error is 5.2%, your answer will be marked as correct if it's between 5.7 and 4.7. Rounding might give 6, which would be marked wrong.

You gradually lift the inclined plane shown below, until the block starts sliding. Calculate the coefficient of static friction. • 0 = 24° the angle where the block begins sliding • Ms = the coefficient of static friction n f o vMq

The following is (spreadsheet generated) simulated data from part of the kinetic friction experiment. You may use a spreadsheet or some other computer method of fitting the data, or you may use graph paper. (I've attached a file.) Answer with the coefficient of kinetic friction (uk). Hanging Added Mass Added Mass (M) (m) 200 15 300 37 400 55 500 76 600 117 700 125 176 800 900 170