Problem 1WUE: Physics Review A crane lifts a loud of bricks of mass 1 570 kg at an initial acceleration of 1.60... Problem 2WUE: Physics Review A crate of mass 20.0 kg rest on a level surface. If the coefficient of kinetic... Problem 3WUE: Calculate the work done by an applied force of 75.0 N on a crate if (a) the force is exerted... Problem 4WUE Problem 5WUE Problem 6WUE: A 4.00-kg crate Marling at rest slides dawn a rough 6.00-m-long ramp, inclined at 30.0 below the... Problem 7WUE: A skier leaves a ski jump at 15.0 m/s at some angle . At what speed is he traveling at his maximum... Problem 8WUE: A block of mass 3.00 kg is placed against a horizontal spring of constant k = 875 N/m and pushed so... Problem 9WUE: What average mechanical power must a 70.0-kg mountain climber generate to climb to the summit of a... Problem 10WUE: A puck of mass 0.170 kg slides across ice in the positive x-direction with a kinetic friction... Problem 1CQ: Consider a tug-of-war as in Figure CQ5.1, in which two teams pulling on a rope are evenly matched so... Problem 2CQ: During a stress test of the cardiovascular system, a patient walks and runs on a treadmill, (a) Is... Problem 3CQ: (a) If the height of a playground slide is kept constant, will the length of the slide or whether it... Problem 4CQ: (a) Can the kinetic energy of a system be negative? (b) Can the gravitational potential energy of a... Problem 5CQ: Roads going up mountains are formed into switch-backs, with the road weaving back and forth along... Problem 6CQ: A bowling ball is suspended from the ceiling of a lecture hall by a strong cord. The ball is drawn... Problem 7CQ: As a simple pendulum swings back and forth, the forces acting on the suspended object are the force... Problem 8CQ: Discuss whether any work is being done by each of the following agents and, if so, whether the work... Problem 9CQ: When a punter kicks a football, is he doing any work on the ball while the toe of his foot is in... Problem 10CQ: The driver of a car slams on her brakes to avoid colliding with a deer crossing the highway. What... Problem 11CQ: A weight is connected to a spring that is suspended vertically from the ceiling. If the weight is... Problem 12CQ: In most situations we have encountered in this chapter, frictional forces tend to reduce the kinetic... Problem 13CQ: Suppose you are reshelving books in a library. As you lift a book from the floor and place it on the... Problem 14CQ: The feet of a standing person of mass m exert a force equal to mg on the floor, and the floor exerts... Problem 15CQ: An Earth satellite is in a circular orbit at an altitude of 500 km. Explain why the work done by the... Problem 16CQ: Mark and David are loading identical cement blocks onto Davids pickup truck. Mark lifts his block... Problem 17CQ: If the speed of a particle is doubled, what happens to its kinetic energy? (a) It becomes four times... Problem 18CQ: A certain truck has twice the mass of a car. Both are moving at the same speed. If the kinetic... Problem 19CQ: If the net work done on a particle is zero, which of the following statements must be true? (a) The... Problem 20CQ: A car accelerates uniformly from rest. Ignoring air friction, when does the car require the greatest... Problem 1P: A weight lifter lifts a 350-N set of weights from ground level to a position over his head, a... Problem 2P: In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using... Problem 3P Problem 4P: a shopper in a supermarket pushes a cart with a force of 35 N directed at an angle of 25 below the... Problem 5P: Starting from rest, a 5.00-kg block slides 2.50 m down a rough 30.0 incline. The coefficient of... Problem 6P: A horizontal force of 150 N is used to push a 40.0-kg packing crate a distance of 6.00 m on a rough... Problem 7P: A sledge loaded with bricks has a total mass of 18.0 kg and it pulled at constant speed by a rope... Problem 8P: A block of mass m = 2.50 kg is pushed a distance d = 2.20 m along a frictionless horizontal table by... Problem 9P: A mechanic pushes a 2.50 103-kg car from rest to a speed of v, doing 5.00 103 J of work in the... Problem 10P: A 7.00-kg bowling ball moves at 3.00 m/s. How fast must a 2.45-g Ping-Pong ball move so that the two... Problem 11P: A 65.0-kg runner has a speed of 5.20 m/s at one instant during a long-distance event. (a) What is... Problem 12P: A worker pushing a 35.0-kg wooden crate at a constant speed for 12.0 m along a wood floor does 350 J... Problem 13P: A 70-kg base runner begins his slide into second base when he is moving at a speed of 4.0 m/s. The... Problem 14P: A running 62-kg cheetah has a top speed of 32 m/s. (a) What is the cheetahs maximum kinetic energy?... Problem 15P: A 7.80-g bullet moving at 575 m/s penetrates a tree trunk to a depth of 5.50 cm. (a) Use work and... Problem 16P: A 0.60-kg particle has a speed of 2.0 m/s at point A and a kinetic energy of 7.5 J at point B. What... Problem 17P: A large cruise ship of mass 6.50 107 kg has a speed of 12.0 m/s at some instant. (a) What is the... Problem 18P: A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.850 m/s encounters a rough horizontal... Problem 19P: A 0.20-kg stone is held 1.3 m above the top edge of a water well and then dropped into it. The well... Problem 20P: When a 2.50-kg object is hung vertically on a certain light spring described by Hookes law, the... Problem 21P: In a control system, an accelerometer consists of a 4.70-g object sliding on a calibrated horizontal... Problem 22P: A 60.0-kg athlete leaps straight up into the air from a trampoline with an initial speed of 9.0 m/s.... Problem 23P: A 2.10 103-kg pile driver is used to drive a steel I-beam into the ground. The pile driver falls... Problem 24P: Two blocks are connected by a light string that passes over two frictionless pulleys as in Figure... Problem 25P: A daredevil on a motorcycle leaves the end of a ramp with a speed of 35.0 m/s as in Figure P5.25. If... Problem 26P: Truck suspensions often have helper springs dial engage at high loads. One such arrangement is a... Problem 27P: The chin-up is one exercise that can be used to strengthen the biceps muscle. This muscle can exert... Problem 28P: A flea is able to jump about 0.5 m. It has been said that if a flea were as big as a human, it would... Problem 29P: A 50.0-kg projectile is fired at an angle of 30.0 above the horizontal with an initial speed of 1.20... Problem 30P: A projectile of mass m is fired horizontally with an initial speed of v0 from a height of h above a... Problem 31P: A horizontal spring attached to a wall has a force constant of 850 N/m. A block of mass 1.00 kg is... Problem 32P: A 50.-kg pole vaulter running at 10. m/s vaults over the bar. Her speed when she is above the bar is... Problem 33P: A child and a sled with a combined mass of 50.0 kg slide down a frictionless slope. If the sled... Problem 34P: Hookes law describes a certain light spring of unstretched length 35.0 cm. When one end is attached... Problem 35P: A 0.250-kg block along a horizontal track has a speed of 1.50 m/s immediately before colliding with... Problem 36P: A block of mass m = 5.00 kg is released from rest from point and slides on the frictionless track... Problem 37P: Tarzan savings on a 30.0-m-long vine initially inclined at an angle of 37.0 with the vertical. What... Problem 38P: Two blocks are connected by a light string that passes over a frictionless pulley as in Figure... Problem 39P: The launching mechanism of a toy gun consists of a spring of unknown spring constant, as shown in... Problem 40P: (a) A block with a mass m is pulled along a horizontal surface for a distance x by a constant force... Problem 41P: (a) A child slides down a water slide at an amusement park from an initial height h. The slide can... Problem 42P: An airplane of mass 1.50 104 kg is moving at 60.0 m/s. The pilot then increases the engines thrust... Problem 43P: The system shown in Figure P5.43 is used to lift an object of mass m = 76.0 kg. A constant downward... Problem 44P: A 25.0-kg child on a 2.00-m-long swing is released from rest when the ropes of the swing make an... Problem 45P: A 2.1 103-kg car starts from rest at the top of a 5.0-m-long driveway that is inclined at 20.0 with... Problem 46P: A child of mass m starts from rest and slides without friction from a height h along a curved... Problem 47P: A skier starts from rest at the top of a hill that is inclined 10.5 with respect to the horizontal.... Problem 48P: In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 4.0... Problem 49P: An 80.0-kg skydiver jumps out of a balloon at an altitude of 1.00 103 m and opens the parachute at... Problem 50P: Q A skier of mass 70.0 kg is pulled up a slope by a motor-driven cable, (a) How much work is... Problem 51P: A 3.50-kN piano is lilted by three workers at constant speed to an apartment 25.0 m above the street... Problem 52P: While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body... Problem 53P: The electric motor of a model train accelerates the train from rest to 0.620 m/s in 21.0 ms. The... Problem 54P: When an automobile moves with constant speed down a highway, most of the power developed by the... Problem 55P Problem 56P Problem 57P: A 1.50 103-kg car starts from rest and accelerates uniformly to 18.0 m/s in 12.0 s. Assume that,... Problem 58P: A 6.50 102-kg elevator starts from rest and moves upward for 3.00 s with constant acceleration... Problem 59P: The force acting on a particle varies as in Figure P5.59. Find the work done by the force as the... Problem 60P: An object of mass 3.00 kg is subject to a force Fx that varies with position as in Figure P5.60.... Problem 61P: The force acting on an object is given by Fx = (8x 16) N, where x is in meters, (a) Make a plot of... Problem 62AP: An outfielder throws a 0.150-kg baseball at a speed of 40.0 m/s and an initial angle of 30.0. What... Problem 63AP: A person doing a chin-up weighs 700 N, exclusive of the arms. During the first 25.0 cm of the lift,... Problem 64AP: A boy starts at rest and slides down a frictionless slide as in Figure P5.64. The bottom of the... Problem 65AP: A roller-coaster car of mass 1.50 103 kg is initially at the top of a rise at point . It then moves... Problem 66AP: A ball of mass m = 1.80 kg is released from rest at a height h = 65.0 cm above a light vertical... Problem 67AP: An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to... Problem 68AP: A block of mass 12.0 kg slides from rest down a frictionless 35.0 incline and is stopped by a strong... Problem 69AP: (a) A 75-kg man steps out a window and falls (from rest) 1.0 m to a sidewalk. What is his speed just... Problem 70AP: A toy gun uses a spring to project a 5.3-g soft rubber sphere horizontally. The spring constant is... Problem 71AP: Two objects (m1 = 5.00 kg and m2 = 3.00 kg) are connected by a light string passing over a light,... Problem 72AP: In a needle biopsy, a narrow strip of tissue is extracted from a patient with a hollow needle.... Problem 73AP: A 2.00 102-g particle is released from rest at point A on the inside of a smooth hemispherical bowl... Problem 74AP: The particle described in Problem 71 (Fig. P5.71) is released from point A at rest. Its speed at B... Problem 75AP: A light spring with spring constant 1.20 103 N/m hangs from an elevated support. From its lower end... Problem 76AP Problem 77AP: In terms of saving energy, bicycling and walking are far more efficient means of transportation than... Problem 78AP: Energy is conventionally measured in Calories as well as in joules. One Calorie in nutrition is 1... Problem 79AP: A ski jumper starts from rest 50.0 m above the ground on a frictionless track and flies off the... Problem 80AP: A 5.0-kg block is pushed 3.0 m up a vertical wall with constant speed by a constant force of... Problem 81AP: A childs pogo slick (Fig. P5.77) stores energy in a spring (k = 2.50 104 N/m). At position (x1 =... Problem 82AP: A hummingbird is able to hover because, as the wings move downward, they exert a downward force on... Problem 83AP: In the dangerous sport of bungee jumping, a daring student jumps from a hot air balloon with a... Problem 84AP: The masses of the javelin, discus, and shot are 0.80 kg, 2.0 kg, and 7.2 kg, respectively, and... Problem 85AP: A truck travels uphill with constant velocity on a highway with a 7.0 slope. A 50.-kg package sits... Problem 86AP: A daredevil wishes to bungee-jump from a hot-air balloon 65.0 m above a carnival midway. He will use... Problem 87AP Problem 88AP: An object of mass m is suspended from the top of a cart by a string of length L as in Figure P5.88a.... Problem 89AP: Three objects with masses m1 = 5.00 kg, m2 = 10.0 kg, and m3 = 15.0 kg, respectively, are attached... Problem 90AP Problem 91AP Problem 92AP: Two blocks, A and B (with mass 50.0 kg and 1.00 102 kg, respectively), are connected by a string,... format_list_bulleted
University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University