PHSX 211 10th Edition Lecture 13 Outline of Last Lecture Practice ProblemsI. Determine the acceleration of block B below.II. How much does the spring scale show in weight?III. Which case has a stronger acceleration?Outline of Current Lecture Practice ProblemsI. Make a list of how you would solve a force problem in general.II. If we include the drag force in projectile motion, what mathematical complications does in introduce?III. At which three points on the rotating disk is velocity and angular velocity greatest?Current LecturePractice ProblemsIV. Make a list of how you would solve a force problem in general.a. Make a Sketchb. List known variablesc. Write equations with Newton’s 2nd Lawd. List all acceleration constraintse. Write separate net force equations for x and y componentsf. Use Newton’s 3rd Law to relate forcesV. If we include the drag force in projectile motion, what mathematical complications does in introduce?a. Without Drag Forcei. There is no acceleration in the x directionii. Velocity in the x direction is constantiii. The x and y components are independent on each otherb. With Drag Forcei. Acceleration existsii. Velocity in the x direction is not constantThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.iii. Drag depends on both velocity in the x and y direction, and therefore makes the x and y components dependent on each otherVI. At which three points on the rotating disk is velocity and angular velocity greatest?a. Velocity is greatest at point 3i. This is because velocity is meters/seconds (m/s) which means that point 3has to cover more ground and travel a further distance than points 2 or 1 in the same amount of time. So the velocity will be greater.b. Angular velocity is equivalent at all three pointsi. This is because angular velocity (w) equals the velocity divided by the radius.ii. W = v/riii. Angular velocity is in rad/s so the degree or number of radians of a circle will be the same.
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