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: The force of static friction acts only between surfaces at rest. Yet that force is essential in... Problem 2FTD: A jet plane flies at constant speed in a vertical circular loop. At what point in the loop docs the... Problem 3FTD: In cross-country skiing, skis should easily glide forward but should remain at rest when the skier... Problem 4FTD: Why do airplanes bank when turning? Problem 5FTD: Why is it easier for a child to stand nearer the inside of a rotating merry-go-round? Problem 6FTD: Gravity pulls a satellite toward Earths center. So why doesnt the satellite actually fall to Earth? Problem 7FTD: Explain why a car with ABS brakes can have a shorter stopping distance. Problem 8FTD: A fishing line has a 20-lb breaking strength. Is it possible to break the line while reeling in a... Problem 9FTD: Youre on a plane undergoing a banked turn, so steep that out the window you see the ground below.... Problem 10FTD: A backcountry skier weighing 700 N skis down a steep slope, unknowingly crossing a snow bridge that... Problem 11E: 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 12E: Two forces act on a 3.1-kg mass that undergoes acceleration a = 0.91 0.27 m/s2. If one force is... Problem 13E: At what angle should you tilt an air table to simulate free fall at the surface of Mars, where g =... Problem 14E: A skier starts from rest at the top of a 24 slope 1.3 km long. Neglecting friction, how long does it... Problem 15E: Studies of gymnasts show that their high rate of injuries to the Achilles tendon is due to tensions... Problem 16E: Find the minimum slope angle for which the skier in Question 12 can safely traverse the snow bridge. Problem 17E: Section 5.2 Multiple Objects Your 12-kg baby sister pulls on the bottom of the tablecloth with all... Problem 18E: Suppose the angles shown in Fig. 5.30 are 60 and 20. If the left-hand mass is 2.1 kg, what should... Problem 19E: Two unfortunate climbers, roped together, are sliding freely down an icy mountainside. The upper... Problem 20E: Suppose the Moon were held in its orbit not by gravity but by tension in a massless cable. Estimate... Problem 21E: Show that the force needed to keep a mass m in a circular path of radius r with period T is 42mr/T2. Problem 22E: A 940-g rock is whirled in a horizontal circle at the end of a 1.30-m-long string, (a) If the... Problem 23E: Youre investigating a subway accident in which a train derailed while rounding an unbanked curve of... Problem 24E: A tetherball on a 1.55-m rope is struck so that it goes into circular motion in a horizontal plane,... Problem 25E: An airplane goes into a turn 3.6 km in radius. If the banking angle required is 28 from the... Problem 26E: Movers slide a 73-kg file cabinet along a floor where the coefficient of kinetic friction is 0.81.... Problem 27E: A hockey puck is given an initial speed of 14 m/s. If it comes to rest in 56 m, whats the... Problem 28E: Starting from rest, a skier slides 100 m down a 28 slope. How much longer does the run take if the... Problem 29E: A curve on a flat road has curvature radius 115 m, and a caution sign urges drivers to slow to 60... Problem 30E Problem 31E: Example 5.4: A 63.2-kg climber finds herself dangling over the edge of a cliff (sec Fig. 5.7).... Problem 32E Problem 33E Problem 34E Problem 35E: Example 5.7: A roller-coaster car is going at 17.7 m/s as it passes through the top of the... Problem 36E Problem 37E Problem 38P Problem 39P: A block is launched with initial speed 2.2 m/s up a 35 frictionless ramp. How far up the ramp docs... Problem 40P: In the process of mitosis (cell division), two motor proteins pull on a spindle pole, each with a... Problem 41P: A 14.6-kg monkey hangs from the middle of a massless rope, each half of which makes an 11.0 angle... Problem 42P: A camper hangs a 26-kg pack between two trees using separate ropes of different lengths, as shown in... Problem 43P: A mass m, undergoes circular motion of radius R on a horizontal frictionless table, connected by a... Problem 44P: Patients with severe leg breaks arc often placed in traction, with an external force countering... Problem 45P: Riders on the Great American Revolution loop-the-loop roller coaster of Example 5.7 wear seatbelts... Problem 46P: A 45-kg skater rounds a 5.0-m-radius turn at 6.3 m/s. (a) What are the horizontal and vertical... Problem 47P: When a piano turns, it banks as shown in Fig. 5.35 to give the wings lifting force Fw a horizontal... Problem 48P: You whirl a bucket of water in a vertical circle of radius 85 cm. Whats the minimum speed that will... Problem 49P: A child sleds down an 8.5 slope at constant speed. Whats the frictional coefficient between slope... Problem 50P: The handle of a 22-kg lawnmower makes a 35 angle with the horizontal. If the coefficient of friction... Problem 51P: Repeal Example 5.4, now assuming that the coefficient of kinetic friction between rock and ice is... Problem 52P: A bat crashes into the vertical front of an accelerating subway train. If the frictional coefficient... Problem 53P: The coefficient of static friction between steel train wheels and steel rails is 0.58. The engineer... Problem 54P: A bug crawls outward from the center of a CD spinning at 200 revolutions per minute. The coefficient... Problem 55P: A 310-g paperback book rests on a 1.2-kg textbook. A force is applied to the textbook, and the two... Problem 56P: Children sled down a41-m-long hill inclined at 25. At the bottom, the slope levels out. If the... Problem 57P: In a typical front-wheel-drive car, 70% of the cars weight rides on the front wheels. If the... Problem 58P: A police officer investigating an accident estimates that a moving car hit a stationary car at 25... Problem 59P: A slide inclined at 35 takes bathers into a swimming pool. With water sprayed onto the slide to make... Problem 60P: You try to move a heavy trunk, pushing down and forward at an angle of 50 below the horizontal. Show... Problem 61P: A block is shoved up a 22 slope with an initial speed of 1.4 m/s. The coefficient of kinetic... Problem 62P Problem 63P: Youre in traffic court, arguing against a speeding citation. You entered a 210-m-radius banked turn... Problem 64P: A space station is in the shape of a hollow ring, 450 m in diameter (Fig. 5.36), At how many... Problem 65P: In a loop-the-loop roller coaster, show that a car moving too slowly would leave the track at an... Problem 66P: Find an expression for the minimum frictional coefficient needed to keep a car with speed v on a... Problem 67P: An astronaut is training in an earthbound centrifuge that consists of a small chamber whirled... Problem 68P Problem 69P: Driving in thick fog on a horizontal road, you spot a tractor-trailer truck jackknifed across the... Problem 70P: A block is projected up an incline at angle . It returns to its initial position with half its... Problem 71P: A 2.1-kg mass is connected to a spring with spring constant k = 150N/m and unstretched length 18cm.... Problem 72P: A car moving at 77 km/h negotiates a 95-m-radius banked turn designed for 45 km/h. What’s the... Problem 73P: Moving through a liquid, an object of mass m experiences a resistive drag force proportional to its... Problem 74P: A block is launched with speed v0 up a slope making an angle with the horizontal; the coefficient... Problem 75P: A florist asks you to make a window display with two hanging pots as shown in Fig. 5.38. The florist... 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: The tilt angle θ that the skater’s body makes with the vertical is given approximately by θ =... format_list_bulleted