1 Introduction And Vectors 2 Motion In One Dimension 3 Motion In Two Dimensions 4 The Laws Of Motion 5 More Applications Of Newton’s Laws 6 Energy Of A System 7 Conservation Of Energy 8 Momentum And Collisions 9 Relativity 10 Rotational Motion 11 Gravity, Planetary Orbits, And The Hydrogen Atom 12 Oscillatory Motion 13 Mechanical Waves 14 Superposition And Standing Waves 15 Fluid Mechanics 16 Temperature And The Kinetic Theory Of Gases 17 Energy In Thermal Processes: The First Law Of Thermodynamics 18 Heat Engines, Entropy, And The Second Law Of Thermodynamics 19 Electric Forces And Electric Fields 20 Electric Potential And Capacitance 21 Current And Direct Current Circuits 22 Magnetic Forces And Magnetic Fields 23 Faraday’s Law And Inductance 24 Electromagnetic Waves 25 Reflection And Refraction Of Light 26 Image Formation By Mirrors And Lenses 27 Wave Optics 28 Quantum Physics 29 Atomic Physics 30 Nuclear Physics 31 Particle Physics Chapter4: The Laws Of Motion
4.1 The Concept Of Force 4.2 Newton’s First Law 4.3 Mass 4.4 Newton’s Second Law 4.5 The Gravitational Force And Weight 4.6 Newton’s Third Law 4.7 Analysis Models Using Newton’s Second Law 4.8 Context Connection: Forces On Automobiles Chapter Questions Section: Chapter Questions
Problem 1OQ Problem 2OQ Problem 3OQ Problem 4OQ Problem 5OQ Problem 6OQ Problem 1CQ Problem 2CQ: If a car is traveling due westward with a constant speed of 20 m/s, what is the resultant force... Problem 3CQ: A person holds a ball in her hand. (a) Identify all the external forces acting on the ball and the... Problem 4CQ Problem 5CQ: If you hold a horizontal metal bar several centimeters above the ground and move it through grass,... Problem 6CQ Problem 7CQ Problem 8CQ Problem 9CQ: Balancing carefully, three boys inch out onto a horizontal tree branch above a pond, each planning... Problem 10CQ Problem 11CQ Problem 12CQ Problem 13CQ Problem 14CQ: Give reasons for the answers to each of the following questions: (a) Can a normal force be... Problem 15CQ Problem 16CQ: In Figure CQ4.16, the light, taut, unstretchable cord B joins block 1 and the larger-mass block 2.... Problem 17CQ Problem 18CQ Problem 19CQ Problem 1P: A force F applied to an object of mass m1 produces an acceleration of 3.00 m/s2. The same force... Problem 2P: (a) A car with a mass of 850 kg is moving to the right with a constant speed of 1.44 m/s. What is... Problem 3P: A toy rocket engine is securely fastened to a large puck that can glide with negligible friction... Problem 4P: Two forces, F1=(6i4j)N and F2=(3i+7j)N, act on a particle of mass 2.00 kg that is initially at rest... Problem 5P Problem 6P Problem 7P: Two forces F1 and F2 act on a 5.00-kg object. Taking F1 = 20.0 N and F2 = 15.0 N, find the... Problem 8P: A 3.00-kg object is moving in a plane, with its x and y coordinates given by x = 5t2 1 and y = 3t3... Problem 9P: A woman weighs 120 lb. Determine (a) her weight in newtons and (b) her mass in kilograms. Problem 10P Problem 11P Problem 12P Problem 13P Problem 14P Problem 15P Problem 16P: You stand on the seat of a chair and then hop off. (a) During the time interval you are in flight... Problem 17P Problem 18P: A block slides down a frictionless plane having an inclination of 15.0. The block starts from rest... Problem 19P Problem 20P: A setup similar to the one shown in Figure P4.20 is often used in hospitals to support and apply a... Problem 21P Problem 22P: The systems shown in Figure P4.22 are in equilibrium. If the spring scales are calibrated in... Problem 23P: A bag of cement weighing 325 N hangs in equilibrium from three wires as suggested in Figure P4.23.... Problem 24P Problem 25P: In Example 4.6, we investigated the apparent weight of a fish in an elevator. Now consider a 72.0-kg... Problem 26P: Figure P4.26 shows loads hanging from the ceiling of an elevator that is moving at constant... Problem 27P Problem 28P: An object of mass m1 = 5.00 kg placed on a frictionless, horizontal table is connected to a string... Problem 29P: An object of mass m = 1.00 kg is observed to have an acceleration a with a magnitude of 10.0 m/s2 in... Problem 30P: Two objects are connected by a light string that passes over a frictionless pulley as shown in... Problem 31P Problem 32P: A car is stuck in the mud. A tow truck pulls on the car with the arrangement shown in Fig. P4.32.... Problem 33P: Two blocks, each of mass m = 3.50 kg, are hung from the ceiling of an elevator as in Figure P4.33.... Problem 34P: Two blocks, each of mass m, are hung from the ceiling of an elevator as in Figure P4.33. The... Problem 35P: In Figure P4.35, the man and the platform together weigh 950 N. The pulley can be modeled as... Problem 36P: Two objects with masses of 3.00 kg and 5.00 kg are connected by a light string that passes over a... Problem 38P: A frictionless plane is 10.0 m long and inclined at 35.0. A sled starts at the bottom with an... Problem 39P Problem 40P: An object of mass m1 hangs from a string that passes over a very light fixed pulley P1 as shown in... Problem 41P: A young woman buys an inexpensive used car for stock car racing. It can attain highway speed with an... Problem 42P: A 1 000-kg car is pulling a 300-kg trailer. Together, the car and trailer move forward with an... Problem 43P: An object of mass M is held in place by an applied force F and a pulley system as shown in Figure... Problem 44P Problem 45P: An inventive child named Nick wants to reach an apple in a tree without climbing the tree. Sitting... Problem 46P: In the situation described in Problem 45 and Figure P4.45, the masses of the rope, spring balance,... Problem 47P: Two blocks of mass 3.50 kg and 8.00 kg are connected by a massless string that passes over a... Problem 48P Problem 49P: In Example 4.5, we pushed on two blocks on a table. Suppose three blocks are in contact with one... Problem 50P Problem 51P Problem 52P Problem 53P: Review. A block of mass m = 2.00 kg is released from rest at h = 0.500 m above the surface of a... Problem 54P: A student is asked to measure the acceleration of a glider on a frictionless, inclined plane, using... Problem 55P Problem 56P Problem 57P: A car accelerates down a hill (Fig. P4.57), going from rest to 30.0 m/s in 6.00 s. A toy inside the... Problem 58P Problem 59P: In Figure P4.53, the incline has mass M and is fastened to the stationary horizontal tabletop. The... Problem 5OQ
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It takes a horizontal applied force of 100 N to keep an object sliding across a level surface at a constant velocity. What can you conclude about the magnitude of the force of friction acting on the object?
Definition Definition Force that opposes motion when the surface of one item rubs against the surface of another. The unit of force of friction is same as the unit of force.
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