LEARNING OBJECTIVES By the end of this section, you will be able to: Statics can be applied to a variety of situations, ranging from raising a drawbridge to bad posture and back strain. We begin with a discussion of problem-solving…
LEARNING OBJECTIVES By the end of this section, you will be able to: It is one thing to have a system in equilibrium; it is quite another for it to be stable. The toy doll perched on the man’s hand…
LEARNING OBJECTIVES By the end of this section, you will be able to: TORQUE The second condition necessary to achieve equilibrium involves avoiding accelerated rotation (maintaining a constant angular velocity). A rotating body or system can be in equilibrium if…
LEARNING OBJECTIVES By the end of this section, you will be able to: The first condition necessary to achieve equilibrium is the one already mentioned: the net external force on the system must be zero. Expressed as an equation, this…
Figure 9.1 On a short time scale, rocks like these in Australia’s Kalbarri National Park are static, or motionless relative to the Earth. (credit: Richard Liblanc/Flickr) Chapter Outline 9.1 The First Condition for Equilibrium 9.2 The Second Condition for Equilibrium 9.3 Stability 9.4 Applications of Statics,…
Linear Momentum and Force Impulse Conservation of Momentum Elastic Collisions in One Dimension Inelastic Collisions in One Dimension Collisions of Point Masses in Two Dimensions Introduction to Rocket Propulsion
LEARNING OBJECTIVES By the end of this section, you will be able to: Rockets range in size from fireworks so small that ordinary people use them to immense Saturn Vs that once propelled massive payloads toward the Moon. The propulsion…
LEARNING OBJECTIVES By the end of this section, you will be able to: In the previous two sections, we considered only one-dimensional collisions; during such collisions, the incoming and outgoing velocities are all along the same line. But what about…
LEARNING OBJECTIVES By the end of this section, you will be able to: We have seen that in an elastic collision, internal kinetic energy is conserved. An inelastic collision is one in which the internal kinetic energy changes (it is not conserved).…
LEARNING OBJECTIVES By the end of this section, you will be able to: Let us consider various types of two-object collisions. These collisions are the easiest to analyze, and they illustrate many of the physical principles involved in collisions. The…