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Chapter 6: Circular Motion and Other Applications of Newton’s Laws

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Physics For Scientists & Engineers
Pages: 150 - 176

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101 Questions for Chapter 6: Circular Motion and Other Applications of Newton’s Laws

  1. A snowmobile is originally at the point with position vector29.0mat95.0°counterclockwise fromtheaxis, moving with velocity4.50m/sat40.0°. It moves with constant acceleration1.90m/s2at. Afterh

    Found on Page 150
  2. In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is h. The mug slides off the counter and strikes the floor at distance dfrom the base of the counter.

    Found on Page 150
  3. A firefighter, a distancefrom a burning building, directs a stream of water from a fire hose at angleabove the horizontal as shown in Figure. If the initial speed of the stream is, at what heightdoes the water strik

    Found on Page 150
  4. A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 20.0 m/s at an angle of 53.0° to the horizontal.

    Found on Page 150
  5. A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the ground with a speed of 20.0 m/s at an angle of 53.0° to the horizontal.

    Found on Page 150
  6. A playground is on the flat roof of a city school, 6.00 m above the street below (Fig. P4.25). the vertical wall of the building is h 5 7.00 m high, forming a 1-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching it at an angle of u 5 53.0° above the horizontal at a point d 5 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall.

    Found on Page 150
  7. Find the scalar product of the vectors in Figure P7.10.

    Found on Page 150
  8. A submarine dives from the water surface at an angle of 300 below the horizontal, following a straight path 50m long. How far is the submarine then below the water surface?

    Found on Page 150
  9. The top end of a spring is held fixed. A block is hung on the bottom end as in Figure OQ15.13a, and the frequency f of the oscillation of the system is measured. The block, a second identical block, and the spring are carried up in a space shuttle to Earth orbit. The two blocks are attached to the ends of the spring. The spring is compressed without making adjacent coils touch (Fig. OQ15.13b), and the system is released to oscillate while floating within the shuttle cabin (Fig. OQ15.13c). What is the frequency of oscillation for this system in terms of f? (a)f2(b)f2(c) f (d) 2f(

    Found on Page 150
  10. A vector points from the origin into the second quadrant of the xy plane. What can you conclude about its components? (a) Both components are positive. (b) The x component is positive, and the y-component is negative. (c) The x-component is negative, and the y-component is positive. (d) Both components are negative. (e) More than one answer is possible.

    Found on Page 150

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