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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.

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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

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  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.

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