1 Doing Physics 2 Motion In A Straight Line 3 Motion In Two And Three Dimensions 4 Force And Motion 5 Using Newton's Laws 6 Energy, Work, And Power 7 Conservation Of Energy 8 Gravity 9 Systems Of Particles 10 Rotational Motion 11 Rotational Vectors And Angular Momentum 12 Static Equilibrium 13 Oscillatory Motion 14 Wave Motion 15 Fluid Motion 16 Temperature And Heat 17 The Thermal Behavior Of Matter 18 Heat, Work, And The First Law Of Thermodynamics 19 The Second Law Of Thermodynamics expand_more
5.1 Using Newton's Second Law 5.2 Multiple Objects 5.3 Circular Motion 5.4 Friction 5.5 Drag Forces Chapter Questions expand_more
Problem 1FTD: Compare the net force on a heavy trunk when its (a) at rest on the floor; (b) being slid across the... Problem 2FTD: The force of static friction acts only between surfaces at rest. Yet that force is essential in... Problem 3FTD: A jet plane flies at constant speed in a vertical circular loop. At what point in the loop docs the... Problem 4FTD: In cross-country skiing, skis should easily glide forward but should remain at rest when the skier... Problem 5FTD: Why do airplanes bank when turning? Problem 6FTD: Why is it easier for a child to stand nearer the inside of a rotating merry-go-round? Problem 7FTD: Gravity pulls a satellite toward Earths center. So why doesnt the satellite actually fall to Earth? Problem 8FTD: Explain why a car with ABS brakes can have a shorter stopping distance. Problem 9FTD: A fishing line has a 20-lb breaking strength. Is it possible to break the line while reeling in a... Problem 10FTD: Two blocks rest on slopes of unequal angles, connected by a rope passing over a pulley (Fig. 5.30).... Problem 11FTD: Youre on a plane undergoing a banked turn, so steep that out the window you see the ground below.... Problem 12FTD: A backcountry skier weighing 700 N skis down a steep slope, unknowingly crossing a snow bridge that... Problem 13E: Two forces, both in the x-y plane, act on a 3.25-kg mass that accelerates at 5.48 m/s2 in a... Problem 14E: Two forces act on a 3.1-kg mass that undergoes acceleration a = 0.91 0.27 m/s2. If one force is... Problem 15E: At what angle should you tilt an air table to simulate free fall at the surface of Mars, where g =... Problem 16E: A skier starts from rest at the top of a 24 slope 1.3 km long. Neglecting friction, how long does it... Problem 17E: A tow truck is connected to a 1400-kg car by a cable that makes a 25 angle to the horizontal. If the... Problem 18E: Studies of gymnasts show that their high rate of injuries to the Achilles tendon is due to tensions... Problem 19E: Find the minimum slope angle for which the skier in Question 12 can safely traverse the snow bridge. Problem 20E: Section 5.2 Multiple Objects Your 12-kg baby sister pulls on the bottom of the tablecloth with all... Problem 21E: If the left-hand slope in Fig. 5.30 makes a 60 angle with the horizontal, and the right-hand slope... Problem 22E: Suppose the angles shown in Fig. 5.30 are 60 and 20. If the left-hand mass is 2.1 kg, what should... Problem 23E: Two unfortunate climbers, roped together, are sliding freely down an icy mountainside. The upper... Problem 24E: Suppose the Moon were held in its orbit not by gravity but by tension in a massless cable. Estimate... Problem 25E: Show that the force needed to keep a mass m in a circular path of radius r with period T is 42mr/T2. Problem 26E: A 940-g rock is whirled in a horizontal circle at the end of a 1.30-m-long string, (a) If the... Problem 27E: Youre investigating a subway accident in which a train derailed while rounding an unbanked curve of... Problem 28E: A tetherball on a 1.55-m rope is struck so that it goes into circular motion in a horizontal plane,... Problem 29E: An airplane goes into a turn 3.6 km in radius. If the banking angle required is 28 from the... Problem 30E: Movers slide a 73-kg file cabinet along a floor where the coefficient of kinetic friction is 0.81.... Problem 31E: A hockey puck is given an initial speed of 14 m/s. If it comes to rest in 56 m, whats the... Problem 32E: Starting from rest, a skier slides 100 m down a 28 slope. How much longer does the run take if the... Problem 33E: A car moving at 40 km/h negotiates a 130-m-radius banked turn designed for 60 km/h. What coefficient... Problem 34P Problem 35P: A block is launched with initial speed 2.2 m/s up a 35 frictionless ramp. How far up the ramp docs... Problem 36P: In the process of mitosis (cell division), two motor proteins pull on a spindle pole, each with a... Problem 37P: A 14.6-kg monkey hangs from the middle of a massless rope, each half of which makes an 11.0 angle... Problem 38P: A camper hangs a 26-kg pack between two trees using separate ropes of different lengths, as shown in... Problem 39P: A mass m, undergoes circular motion of radius R on a horizontal frictionless table, connected by a... Problem 40P: Patients with severe leg breaks arc often placed in traction, with an external force countering... Problem 41P: Riders on the Great American Revolution loop-the-loop roller coaster of Example 5.7 wear seatbelts... Problem 42P: A 45-kg skater rounds a 5.0-m-radius turn at 6.3 m/s. (a) What are the horizontal and vertical... Problem 43P: When a piano turns, it banks as shown in Fig. 5.35 to give the wings lifting force Fw a horizontal... Problem 44P: You whirl a bucket of water in a vertical circle of radius 85 cm. Whats the minimum speed that will... Problem 45P: A child sleds down an 8.5 slope at constant speed. Whats the frictional coefficient between slope... Problem 46P: The handle of a 22-kg lawnmower makes a 35 angle with the horizontal. If the coefficient of friction... Problem 47P: Repeal Example 5.4, now assuming that the coefficient of kinetic friction between rock and ice is... Problem 48P: A bat crashes into the vertical front of an accelerating subway train. If the frictional coefficient... Problem 49P: The coefficient of static friction between steel train wheels and steel rails is 0.58. The engineer... Problem 50P: A bug crawls outward from the center of a CD spinning at 200 revolutions per minute. The coefficient... Problem 51P: A 310-g paperback book rests on a 1.2-kg textbook. A force is applied to the textbook, and the two... Problem 52P: Children sled down a41-m-long hill inclined at 25. At the bottom, the slope levels out. If the... Problem 53P: In a typical front-wheel-drive car, 70% of the cars weight rides on the front wheels. If the... Problem 54P: A police officer investigating an accident estimates that a moving car hit a stationary car at 25... Problem 55P: A slide inclined at 35 takes bathers into a swimming pool. With water sprayed onto the slide to make... Problem 56P: You try to move a heavy trunk, pushing down and forward at an angle of 50 below the horizontal. Show... Problem 57P: A block is shoved up a 22 slope with an initial speed of 1.4 m/s. The coefficient of kinetic... Problem 58P: At the end of a factory production line, boxes start from rest and slide down a 30 ramp 5.4 m long.... Problem 59P: Youre in traffic court, arguing against a speeding citation. You entered a 210-m-radius banked turn... Problem 60P: A space station is in the shape of a hollow ring, 450 m in diameter (Fig. 5.36), At how many... Problem 61P: In a loop-the-loop roller coaster, show that a car moving too slowly would leave the track at an... Problem 62P: Find an expression for the minimum frictional coefficient needed to keep a car with speed v on a... Problem 63P: An astronaut is training in an earthbound centrifuge that consists of a small chamber whirled... Problem 64P: You stand on a spring scale at the north pole and again at the equator. Which scale reading will be... Problem 65P: Driving in thick fog on a horizontal road, you spot a tractor-trailer truck jackknifed across the... Problem 66P: A block is projected up an incline at angle . It returns to its initial position with half its... Problem 67P: A 2.1-kg mass is connected to a spring with spring constant k = 150N/m and unstretched length 18cm.... Problem 68P: Take k = 0.75 in Example 5.11, and plot the tension force in units of the trunks weight, as a... Problem 69P: Repeat the preceding problem for an arbitrary value of by k, using calculus to find the minimum... Problem 70P: Moving through a liquid, an object of mass m experiences a resistive drag force proportional to its... Problem 71P: Suppose the object in Problem 70 had an initial velocity in the horizontal direction equal to the... Problem 72P: A block is launched with speed v0 up a slope making an angle with the horizontal; the coefficient... Problem 73P: A florist asks you to make a window display with two hanging pots as shown in Fig. 5.38. The florist... Problem 74P: Youre al the state fair. A sideshow barker claims that the star of the show can throw a 7.3-kg... Problem 75P: One of the limiting factors in high-performance aircraft is the acceleration to which the pilot can... Problem 76P: Figure 5.39 shows an apparatus used to verify Newtons second law. A pulling mass m1 hangs vertically... Problem 77PP: A spiral is an ice-skating position in which the skater glides on one foot with the other foot held... Problem 78PP: A spiral is an ice-skating position in which the skater glides on one foot with the other foot held... Problem 79PP: A spiral is an ice-skating position in which the skater glides on one foot with the other foot held... Problem 80PP: A spiral is an ice-skating position in which the skater glides on one foot with the other foot held... format_list_bulleted