A. Multiple Choice From Chapter 1 - Due Friday, September 11 - 11:30 am
B. Multiple Choice From Chapter 2 - Due Tuesday, September 15 - 11:30 am
C. Chapter 1 & 2 Problems from Serway - Due Thursday, September 17 - 11:30 am
Chapter 1 - 17, 21, 46, 50, 61
Chapter 2 - 3, 13, 17, 28, 39, 74, S5 (Extra Credit)
D. Chapter 1 & 2 Additional Problems - Due Thursday, September 17 - 11:30 am
1.1 On a visit to a distant star system (the Salnoid system in the Omicron sector) the crew of the starship Enterprise detect a strange planet made of unusual materials. Sensor readings give both the radius and the mass of the planet, and the ship's computer calculates the planet's density to be higher than anything heretofore discovered. Captain Picard expresses some incredulity at the value calculated by the computer, and asks you (a junior officer) to repeat the calculation. (The planet may be assumed to be spherical in shape, and for a sphere the surface area, A = 4r2 and the volume, V = 4/3r3.)
2.1 A hoodlum standing on a tall building throws a stone vertically down from the roof at a given speed. How long does it take the stone to reach the ground?
A. Multiple Choice From Chapter 3 - Due Friday, September 19 - 11:30 am
B. Chapter 3 Problems from Serway - Due Tuesday, September 23 - 11:30 am
Chapter 3 - 7, 11, 29, 49, S2
C. Chapter 3 Additional Problems - Due Monday, September 23 - 11:30 am
3.1 You find yourself driving in an unfamiliar part of the state, trying to get to the town of Clearwater. After driving aimlessly for about 20 minutes, you reach the town of East Branch, and decide to stop for lunch. After eating, you ask the waitress for directions to Clearwater, and she tells you, "Just take Highway 5 north until you reach County Road 11. Then turn east on 11 and you'll run straight into downtown Clearwater. Course, it'd be a heckuva lot shorter as the crow flies." You follow her directions, and use your car's odometer to measure the distances you travel along Highway 5 and then along County Road 11. Given these distances, what would have been the distance and direction from East Branch to Clearwater "as the crow flies"?
A. Multiple Choice From Chapter 4 - Due Friday, September 26 - 11:30 am
B. Chapter 4 Problems from Serway - Due Tuesday, September 30 - 11:30 am
Chapter 4 - 3, 7, 11, 17, 31, 82
C. Chapter 4 Additional Problems - Due Tuesday, September 30 - 11:30 am
4.1 A rifle shoots a bullet at a target. You are given the muzzle velocity of the rifle (1202 ft/s) as well as the distance to the target (232 ft). Calculate how high above the target the rifle must be aimed so that the bullet will hit the target.
4.2 A boy whirls a stone in a horizontal circle above his head (1.86 m above the ground) by means of a 1.57 m long string while his father, a 2-m tall physics teacher standing 10.0 m away from him, patiently attempts to explain the laws of uniform circular motion to his son. Without warning, the string breaks and the stone flies off heading directly for the alarmed physicist! Fortunately, the stone lands directly at the father's feet, leaving him unharmed physically although emotionally shaken. The son laughs, explaining to his dad, "The centripetal acceleration wasn't big enough to worry about." What was the centripetal acceleration when the stone was in circular motion?
(a) What are the magnitude and direction of the velocity of ship A relative to B?
(b) After what time will they be 160 nautical miles apart?
(c) What will be the bearing of B from A at that time?
A. Multiple Choice From Chapter 5 - Due Friday, October 2 - 11:30 am
B. Chapter 5 Problems from Serway - Due Friday, October 9 - 12:30 pm
Chapter 5 - 5, 23, 31, 39, 43, 71, 89, 90
C. Nobel Conference - Due Thursday, October 8 - 12:30 pm
Attend at least two of the Nobel Lectures (or firing lines) and write a brief summary of what you learned. One or two paragraphs from each event will be sufficient.
D. Chapter 5 Additional Problems - Due Friday, October 9 - 12:30 pm
5.1 A railroad flatcar is loaded with crates whose coefficients of friction with the car are .26 static and .17 kinetic. If the train is initially moving along at a constant speed 38.4 km/hr, in how short a distance can the train be stopped without letting the crates slide?
5.2 A block of weight 73.9 N rests on an a plane inclined at 20o to the horizontal. The coefficients of static and kinetic friction are .26 and .13 respectively. Calculate the minimum force F, parallel to the plane, that will prevent the block from slipping down the plane. Then, calculate the minimum force F that will start the block moving up the incline. Finally, calculate the force required to move the block up the plane with constant velocity.
5.3 The physics building catches fire, and a student (who weighs 82 kg) is caught inside. The only method of escape is to exit through a second-floor window and slide down a rope to safety. Luckily, he finds a piece of rope in the lab, and ties it to one of the lab tables before throwing it out the window. As he is about to climb down the rope, however, he sees that it is labeled "WARNING: Do not exceed 100 lb." If the bottom of the second floor window is 25 feet off the ground, what is the minimum acceleration with which he can slide down to safety?
A. Multiple Choice From Chapter 6 - Due Tuesday, October 13 - 12:30 pm
B. Chapter 6 Problems from Serway - Due Friday, October 16 - 12:30 pm
Chapter 6 - 9, 21, 27, 33, 49, 50, 52
C. Chapter 6 Additional Problems - Due Friday, October 16 - 12:30 pm
6.1 You are out for a Sunday drive, cruising the back roads of Nicollet County with a friend, and are traveling a bit faster than the speed limit. Suddenly, you are headed for the top of a hill (the top of which can be approximated by a circle of radius 269 m). How fast can you drive without having the car (which weighs 2500 kg) leave the road at the top of the hill?
6.2 A friend of yours is a member of the Gustavus track and field team, and his specialty is the shot put, in which a 16-lb shot is thrown for maximum distance. He asks your help in understanding the physics of the event. You find, in a book, the value of the terminal speed of the shot (101 m/s), and the book also says that the shot will reach 95% of this terminal speed only after falling 2500 m! Assuming the drag coefficient to be 0.49, determine the diameter of the shot.
D. Freebody Exercises 7 + 10 - Due Friday, October 16 - 12:30 pm
A. Multiple Choice From Chapter 7 - Due Monday, October 19 - 12:30 pm
B. Chapter 7 Problems from Serway - Due Thursday, October 22 - 12:30 pm
Chapter 7 - 11, 17, 25, 37, 41, 60, 65
C. Chapter 7 Additional Problems - Due Thursday, October 22 - 12:30 pm
7.1 A worker pushes a crate (mass 27 kg) up a 26º incline by exerting a constant force of 162 N parallel to the incline. As the crate slides 3.6 m up the incline, how much work is done on the crate by (a) the worker; (b) the force of gravity; and (c) the normal force of the incline?
7.2 The force exerted on an object varies with the object's position according to the expression F = A/x2 where A is 8.6 N/m2. Calculate the work done by the force in displacing the object from x = 1 m to 2.5 m.
A. Fall Break - Due Friday, October 23 - Monday, October 26
Have Fun !!!!!!
B. Multiple Choice From Chapter 8 - Due Wednesday, October 28 - 12:30 pm
C. Chapter 8 Problems from Serway - Due Monday, November 2 - 12:30 pm
Chapter 8 - 5, 11, 17, 25, 35, 39, 49, 65, S1 (Extra Credit)
D. Chapter 8 Additional Problems - Due Monday, November 2 - 12:30 pm
8.1 The cable of an elevator (see figure) snaps when the elevator, which weighs 4484 pounds, is at rest at the first floor so that the bottom is a 13.9 feet above a cushioning spring whose force constant is 8400 pounds/feet. A safety device clamps the guide rails, removing 1000 ft×lb of mechanical energy for each 1.00 ft that the elevator moves. (a) Find the speed of the elevator just before it hits the spring. (b) Find the distance that the spring is compressed.
A. Multiple Choice From Chapter 9 - Due Wednesday, November 4 - 12:30 pm
B. Chapter 9 Problems from Serway - Due Monday, November 9 - 12:30 pm
Chapter 9 - 7, 18, 21, 37, 47, 52, 62, 66
C. Chapter 9 Additional Problems - Due Monday, November 9 - 12:30 pm
9.1 It is well known that bullets and other missiles fired at Superman simply bounce off his chest as in the figure. Suppose that a gangster sprays Superman's chest with high-velocity (507 m/s) bullets (of mass 5.5 g) at 111 bullets/minute. Suppose too that the bullets rebound straight back with no loss in speed. Find the average force exerted on Superman's chest.
9.2 Two vehicles A and B are travelling west and south respectively, toward the same intersection where they collide and lock together. A has a weight of 2232 pounds and is initially going 34 mph while B has a weight of 3166 pounds and initially is going 62 mph. Find the magnitude and direction of their (interlocked) velocity immediately after the collision.
A. Multiple Choice From Chapter 10 - Due Thursday, November 12 - 12:30 pm
B. Chapter 10 Problems from Serway - Due Tuesday, November 17 - 12:30 pm
Chapter 10 - 7, 19, 21, 27, 43, 49, 51, 56
C. Chapter 10 Additional Problems - Due Tuesday, November 17 - 12:30 pm
10.1 Calculate the moment of inertia of a meter stick of mass 0.41 kg about an axis perpendicular to the stick and located at the 12 centimeter mark.
A. Multiple Choice From Chapter 11 - Due Thursday, November 19 - 12:30 pm
B. Chapter 11 Problems from Serway - Due Wednesday, November 25 - 12:30 pm
Chapter 11 - 5, 14, 15, 39, 42, 53
C. Chapter 11 Additional Problems - Due Wednesday, November 25 - 12:30 pm
11.1 A particle P of mass 1.82 kg has position r (4.62 m) and velocity v (5.96 m/s) as shown in the figure. It is acted on by the force F (3.61 N). All three vectors lie in a common plane. Compute: (a) the angular momentum of the particle; (b) the torque, about the origin, acting on the particle.
11.2 A man stands on a frictionless platform that is rotating with a given angular speed (1.19 revolutions/second); his arms are outstretched and he holds a weight in each hand. With his hands in this position the total moment of inertia of the man, the weights, and the platform is 5.86 kg m2. If, by moving the weights, the man decreases the moment of inertia to 2.54 kg m2, (a) what is the resulting angular speed of the platform; and (b) what is the ratio of the new kinetic energy to the original kinetic energy?
A. Multiple Choice From Chapter 12 - Due Tuesday, December 1 - 12:30 pm
Note: This only includes sections 1 - 3!
B. Chapter 12 Problems from Serway - Due Friday, December 4 - 12:30 pm
Chapter 12 - 5, 20, 33, 36, 45, 51, 54
C. Chapter 12 Additional Problems - Due Friday, December 4 - 12:30 pm
12.1 A 2.96 x 7.18 ft door has two hinges located at the same distance (1.26 ft) from its top and bottom respectively. Each supports half the weight of the door (78 pounds). Assume that the center of gravity is at the door's center and determine the horizontal and vertical force components exerted by each hinge on the door.
A. Multiple Choice From Chapter 14 - Due Tuesday, December 8 - 12:30 pm
B. Chapter 14 Problems from Serway - Due Friday, December 11 - 12:30 pm
Chapter 14 - 3, 17, 19, 37, 57, 62, 64
C. Chapter 14 Additional Problems - Due Friday, December 11 - 12:30 pm
14.1 A person who is standing on the sidewalk outside the World Trade Center building in New York City weighs 128 pounds. Suppose that the same person rides the elevator up one of the Trade Center towers to a height of 1128 feet. How much less would he weigh there because he is slightly farther away from the center of the earth?
14.2 Find the escape speed for a rocket leaving the surface of a planet of given gravitational acceleration (.284 times the Earth's) and radius (.334 times the Earths).