the object of interest is drawn as a dot to show where and how and what forces are acting on the object of interest. You know how long to draw the arrows by reflecting for a moment and figuring out balanced and unbalanced forces. The man is not touching the crate, therefore he exerts no force onto the crate. By viewing a complete force diagram, you can see which way the object of motion is moving and how much force is being exerted on it. You cannot tell the velocity of the moving object of interest, initial position or acceleration. You know that the bowling ball is moving in the right (positive) direction. You know that the stick is pushing the bowling ball. However, you cannot tell how fast the bowling ball is moving where it started or how much force is being exerted on it.
6. What do you know (and what do you NOT know) about the MOTION of the object shown in the force diagram below?
Hi Gabby,
ReplyDeleteYou need to continue this journal entry in order to demonstrate your acheivement of the lesson's learning goals. Make a NEW POST on your blog with the same title and address the comments below. You must post your response within 24 hours.
You are working on Journal 11/20
Good job answering the questions about the video, your responses show that you understand the most important lessons about making a force diagram. This will be very helpful for you in the lessons to come.
Your answer to question 6 does not yet show that you understand the big lesson of last week. Consider the force diagram carefully and address the following questions:
6A. Explain why you don't know whether the ball is moving in the +x or -x direction, or not moving at all.
6B. Explain what would be happening to the motion of this ball if it were moving in the +x direction, with forces exerted on it by other objects as shown.
6C. Explain what would be happening to the motion of this ball if it were NOT moving yet, with forces exerted on it by other objects as shown.
6D. Explain what would be happening to the motion of this ball if it were moving in the -x direction with forces exerted on it by other objects as shown.
6E. Explain the relationship between the direction of the total force exerted on the object of interest and what is happening to the motion of the object of interest.
Grade = 2/4 Not complete yet. Follow instructions to complete the assignment and earn full credit. Your revisions must be completed before the next journal is due or else a late penalty will be imposed.