Questions from Modern Physics

Q: How might you determine experimentally the moment of inertia of an irregularly

How might you determine experimentally the moment of inertia of an irregularly shaped body about a given axis?

Q: Describe how you could use part (b) of Table 9

Describe how you could use part (b) of Table 9.2 to derive the result in part (d). Table 9.2:

Q: For the equations for I given in parts (a) and

For the equations for I given in parts (a) and (b) of Table 9.2 to be valid, must the rod have a circular cross section? Is there any restriction on the size of the cross section for these equations t...

Q: A spring of negligible mass has force constant k = 1600 N

A spring of negligible mass has force constant k = 1600 N/m. (a) How far must the spring be compressed for 3.20 J of potential energy to be stored in it? (b) You place the spring vertically with one e...

Q: Two identical balls, A and B, are each attached to

Two identical balls, A and B, are each attached to very light string, and each string is wrapped around the rim of a frictionless pulley of mass M. The only difference is that the pulley for ball A is...

Q: An elaborate pulley consists of four identical balls at the ends of

An elaborate pulley consists of four identical balls at the ends of spokes extending out from a rotating drum (Fig. Q9.18). A box is connected to a light, thin rope wound around the rim of the drum. W...

Q: You can use any angular measure—radians, degrees, or

You can use any angular measure—radians, degrees, or revolutions—in some of the equations in Chapter 9, but you can use only radian measure in others. Identify those for which using radians is necessa...

Q: A diatomic molecule can be modeled as two point masses, m1

A diatomic molecule can be modeled as two point masses, m1 and m2, slightly separated (Fig. Q9.2). If the molecule is oriented along the y-axis, it has kinetic energy K when it spins about the x-axis....

Q: A wheel is rotating about an axis perpendicular to the plane of

A wheel is rotating about an axis perpendicular to the plane of the wheel and passing through the center of the wheel. The angular speed of the wheel is increasing at a constant rate. Point A is on th...

Q: Estimate your own moment of inertia about a vertical axis through the

Estimate your own moment of inertia about a vertical axis through the center of the top of your head when you are standing up straight with your arms outstretched. Make reasonable approximations and m...