9781118230725.pdf

6-3 UNIFORM CIRCULAR MOTION 135 KEY IDEA We can assume that Diavolo and his bicycle travel through the top of the loop as a sing ...

136 CHAPTER 6 FORCE AND MOTION—II (b) r Center fs Car a Fg FN y R (a) r FL v fs The toward-the- center force is the frictional f ...

6-3 UNIFORM CIRCULAR MOTION 137 Substituting our known negative lift of FL663.7 N and solving for FL,90give us FL,906572 N660 ...

138 CHAPTER 6 FORCE AND MOTION—II write Newton’s second law for components along the yaxis (Fnet,ymay) as FNcosumgm(0), from ...

QUESTIONS 139 Questions 1 In Fig. 6-12, if the box is station- ary and the angle u between the hor- izontal and force is increas ...

•9 A 3.5 kg block is pushed along a horizontal floor by a force of magnitude 15 N at an angle 40  with the horizontal (Fig. 6-1 ...

Cheerios (mass mC1.0 kg) and a box of Wheaties (mass mW 3.0 kg) are accelerated across a hori- zontal surface by a horizontal f ...

142 CHAPTER 6 FORCE AND MOTION—II a a 1 a 1 0 μ k 2 μ k 3 μ k Figure 6-36 Problem 32. ••30 A toy chest and its contents have a ...

kg and M88 kg) in Fig. 6-38 are not attached to each other. The coef- ficient of static friction between the blocks is ms0.38, ...

••58 Brake or turn? Figure 6- 44 depicts an overhead view of a car’s path as the car travels toward a wall. Assume that the driv ...

PROBLEMS 145 •••59 In Fig. 6-45, a 1.34 kg ball is connected by means of two mass- less strings, each of length L 1.70 m, to a v ...

146 CHAPTER 6 FORCE AND MOTION—II θ P Figure 6-52 Problem 69. φ New slope Original slope θ Figure 6-55 Problem 76. 67 In Fig. 6- ...

PROBLEMS 147 79 BlockAin Fig. 6-56 has mass mA4.0 kg, and block Bhas massmB 2.0 kg. The coefficient of kinetic friction between ...

148 CHAPTER 6 FORCE AND MOTION—II 93 A 1.5 kg box is initially at rest on a horizontal surface when at t0 a horizontal force (w ...

What Is Physics? One of the fundamental goals of physics is to investigate something that every- one talks about: energy. The to ...

electronically with nothing material actually moving. However, the total amount (the total of all the money numbers) can always ...

Work If you accelerate an object to a greater speed by applying a force to the object, you increase the kinetic energy of the ob ...

Work and Kinetic Energy Finding an Expression for Work Let us find an expression for work by considering a bead that can slide a ...

We can use the definition of the scaler (dot) product (Eq. 3-20) to write (work done by a constant force), (7-8) whereFis the ma ...

done on the safe by the normal force from the floor? KEY IDEA Because these forces are constant in both magnitude and direction, ...