1 / 15

A pendulum swings from its end point on the left (point 1) to its end point on the right (point 5). At each of the label

A pendulum swings from its end point on the left (point 1) to its end point on the right (point 5). At each of the labeled points, * draw and label a r and a t using the correct relative lengths, * draw and label a total acceleration vector. 1. 5. 2. 4. 3.

gillespie
Télécharger la présentation

A pendulum swings from its end point on the left (point 1) to its end point on the right (point 5). At each of the label

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A pendulum swings from its end point on the left (point 1) to its end point on the right (point 5). At each of the labeled points, * draw and label ar and at using the correct relative lengths, * draw and label a total acceleration vector. 1 5 2 4 3

  2. A car has tires with a diameter of 58 cm. One of the tires has a chalk mark at the edge. When the car is moving at 25 m/s, • What is the period of the chalk mark’s rotation? • What is the tire’s angular velocity? • What is the tire’s radial acceleration? • What are the tire’s tagential and angular accelerations?

  3. The car speeds up from 25 m/s to 30 m/s in 5 seconds. During this time what are the • tangential acceleration • angular acceleration • of the chalk mark on the edge of the tire?

  4. A person is hit in the head (mhead = 5.0 kg) by a ball that pushes with 45 Newtons of force. How fast will their head accelerate while in contact with this ball?

  5. For each of the following situations draw a free-body diagram for the underlined object. Draw a net force vector off to the side. • A cup sits on the desk • A block is at rest on an incline • A piece of paper has just been dropped (vi=0) • A piece of paper has been falling for a while • Kristine is jumping up • Kristine is pushing a cart • A book is pressed against the wall • A box is sitting still in the back of an accelerating truck

  6. A 1000 kg steel beam is supported by two ropes. What is the tension in each rope?

  7. QUIZ (to turn in) You’re pushing your grandfather in his wheelchair (m = 95 kg) down a dry concrete sidewalk at 3 m/s. How hard do you have to push to keep the wheelchair moving at this speed?

  8. A car’s engine provides a force of 1900 N to accelerate the 1100 kg car. Neglecting drag but not rolling friction, how long should it take this car to reach 20 m/s? (µr = 0.02 for rubber on concrete)

  9. TO TURN IN: • Draw a free body diagram for the shuttle during liftoff • Use Newton’s 2nd law to create an equation for the shuttle’s thrust • Analyze the shuttle’s motion using the video and sketch graphs of its position, velocity and acceleration • Use information from the analyzed motion and the known shuttle mass to find the shuttle’s thrust.

More Related