College Physics

(10.93) L = 0.4⎛⎝5.979×10^24 kg⎞⎠ ⎛ ⎝6.376×10 (^6) m⎞ ⎠ (^2) ⎛ ⎝ 1 rev d ⎞ ⎠ = 9.72×10^37 kg ⋅ m^2 ⋅rev/d. Substituting2πrad for ...

Solving forωand substituting the formula for the moment of inertia of a disk into the resulting equation gives ω=L (10.99) I = L ...

because the initial angular velocity is zero. The kinetic energy of rotation is KE (10.106) rot= 1 2 Iω^2 so it is most convenie ...

Figure 10.23(a) An ice skater is spinning on the tip of her skate with her arms extended. Her angular momentum is conserved beca ...

There are several other examples of objects that increase their rate of spin because something reduced their moment of inertia. ...

Figure 10.26(a) A disk slides toward a motionless stick on a frictionless surface. (b) The disk hits the stick at one end and ad ...

First, we calculate the translational kinetic energy by entering given values for the mass and speed of the incoming disk. KE =^ ...

Figure 10.27A disk hitting a stick is compared to a tennis ball being hit by a racquet. (a) When the ball strikes the racquet ne ...

be represented by arrows. The right-hand rule defines both to be perpendicular to the plane of rotation in the direction shown. ...

angular acceleration: Figure 10.30In figure (a), a person holding the spinning bike wheel lifts it with her right hand and pushe ...

angular momentum: change in angular velocity: kinematics of rotational motion: law of conservation of angular momentum: moment o ...

• Torque is the turning effectiveness of a force. In this case, becauseFis perpendicular tor, torque is simplyτ=rF. If we multip ...

5.The moment of inertia of a long rod spun around an axis through one end perpendicular to its length isML^2 /3. Why is this mom ...

Figure 10.34A child may jump off a merry-go-round in a variety of directions. 15.Suppose a child gets off a rotating merry-go-ro ...

Figure 10.36The image shows a view down the barrel of a cannon, emphasizing its rifling. Rifling in the barrel of a canon causes ...

Problems & Exercises 10.1 Angular Acceleration 1.At its peak, a tornado is 60.0 m in diameter and carries 500 km/h winds. Wh ...

Figure 10.38A motorcycle wheel has a moment of inertia approximately that of an annular ring. 16.Zorch, an archenemy of Superman ...

30.0 m/s. (a) How high can it coast up the hill, if you neglect friction? (b) How much energy is lost to friction if the motorcy ...

Figure 10.41The Earth’s axis slowly precesses, always making an angle of 23.5° with the direction perpendicular to the plane of ...

358 CHAPTER 10 | ROTATIONAL MOTION AND ANGULAR MOMENTUM This content is available for free at http://cnx.org/content/col11406/1. ...