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Physics 218: Mechanics

Physics 218: Mechanics. Instructor: Dr. Tatiana Erukhimova Lecture 30. Hw: Chapter 12 problems and exercises Chapter 13: Prs. 1,2; Exs. 2,4.

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Physics 218: Mechanics

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  1. Physics 218: Mechanics Instructor: Dr. Tatiana Erukhimova Lecture 30 Hw: Chapter 12 problems and exercises Chapter 13: Prs. 1,2; Exs. 2,4

  2. A dart, mass m, moves horizontally with a velocity of magnitude V0. It strikes and sticks into a wooden block, mass M. The block is hung from a string as shown. Assume the collision of the dart and the block takes place so quickly that the string remains vertical during the collision. Find H, the height at which the block stops.

  3. Polar coordinates

  4. A 3000 kg spacecraft is in a circular orbit 2000 km above the surface of Mars. How much work must the spacecraft engines perform to move the spacecraft to a circular orbit that is 4000 km above the surface?

  5. A ball of mass m is swung around a circle at the end of a string of length L. The string will break if the tension in it exceeds a critical value, Tc. What is the largest constant angular velocity the ball can have without breaking the string?

  6. A ball of mass m is swung around a circle at the end of a string of length L. What is the minimum  the ball can have and still travel in a circle without string becoming slack?

  7. Have a great day! Hw: Chapter 12 problems and exercises; Chapter 13: Pr. 1,2; Ex. 2,4 Reading: Chapter 13

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