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Master physics with Schaum's--the high-performance solved-problem guide. It will help you cut study time, hone problem-solving skills, and achieve your personal best on exams! Students love Schaum's Solved Problem Guides because they produce results. Each year, thousands of students improve their test scores and final grades with these indispensable guides. Get the edge on your classmates. Use Schaum's! If you don't have a lot of time but want to excel in class, use this book to: Brush up before tests Study quickly and more effectively Learn the best strategies for solving tough problems in step-by-step detail Review what you've learned in class by solving thousands of relevant problems that test your skill Compatible with any classroom text, Schaum's Solved Problem Guides let you practice at your own pace and remind you of all the important problem-solving techniques you need to remember--fast! And Schaum's are so complete, they're perfect for preparing for graduate or professional exams.

How much work does the force do in pulling the object 8 m? How much work does a pulling force do on the box in pulling it 8. Find the work done. How much work is done? The tension in the rope is N while the box is dragged 15 m. If the coefficient of sliding friction between carton and floor is 0.

How much work does it do in pulling the box 80 cm? A continuous chain passes over the smaller lO-cm pulley. As a result. Then the smaller upper pulley unwinds a length of chain equal to its circumference. The load w is lifted half this distance. The operator exerts a downward force F on the chain to lift the load w.

Therefore the lower gear turns through 2: Energy conservation gives! Since the firing time is 6. How must the rocket be pointed? In order to accomplish the desired change in this minimum firing time. His total mass is kg. The length of the rope which lands on the table during an interval dt following this instant is v dt.

He is coasting along the station at a speed of 1. Since a length of rope y. How long would this take? How much rocket fuel is used. The increment of momentum imparted to the table by this length in coming to rest is m v dt v.

Using the given numerical values. By division of equations. Since the resisting force is constant. It accidentally discharges and shoots a 1O-gbullet parallel to the table. Let the mass of the boy and the boxcar be M.

Find the average force F exerted on the ball by the bat. How fast is she moving afier she throws the bag of sugar? She has with her only a 3.

Find the magnitude and direction of the velocity acquired by the boat. The bat acts on the ball for 0. Its final velocity is 19 mls in the -x direction.

If there is no friction in the wheels of the boxcar. COO slug 6. He throws a ball of mass m with velocity Votoward the other end. How far has the pistol moved by the time the bullet hits a wall 5 m away? Initially the boat was at rest. What is its resultant acceleration? What would its acceleration be? The center of mass of the system is located between body 1 and body 2. All numerical values quoted in this exercise are to be considered exact. US Consider the system composed of a I-kg body and a 2-kg body initially at rest at a center-to-center distance of 1 m.

What happens? The center of the disk is a distance d from the top's point of contact with the table. How '0 much work must be done in setting the top spinning?

The instructor now hands the wheel back to the volunteer. What is the result? The volunteer remains stationary. The work required is 0.

She must therefore spin clockwise. For the given numerical values. The stool can turn freely on its axle. Holding the axle vertically with one hand. What happens to the volunteer as she does this? The top is observed to precess steadily about the vertical axis with angular speed wp. The volunteer's vertical component of angular momentum must now be zero. What happens now?

There are horizontal torques. The volunteer must therefore have a downward vertical angular momentum to keep the total angular momentum pointing down. Her spin rate is twice as fast as in part d. Applying this to a stream tube in steady flow Fig. Steady flow is sometimes called laminar flow. In steady flow. A streamline is an imaginary line in a fluid.

The conservation of mass requires that the net rate of flow of mass inward across any closed surface equal the rate of increase of the mass within the surface. Streamlines thus no longer characterize the paths of fluid particles. A flow is incompressible if the fluid density p is constant.

Turbulent flow is often characterized by constantly changing swirls or eddies of fluid. In turbulent flow the fluid velocity changes from moment to moment at any given location. Streamlines and stream tubes are fixed in steady flow. A stream tube is a tube whose surface is made up of streamlines. That is.

Then the force normal to the plate equals the time rate of change of momentum along the direction of the water jet. The jet discharges water at the rate of 0. If the water loses its entire rightward momentum as it strikes the disk. Similarly the 5. Because the east displacement contributes no component along the north-south line and the south displacement has no component along the east-west line, the car is Algebraically we note that 1. Since the pulleys are frictionless and with negligible mass, the tension T in the cord is the same everywhere.

The forces on the leg and foot from the device are caused by the tensions in the cord. Assume the pulleys have negligible friction and weight.

Call T the tension in the rope the man is holding; T is the same throughout the one piece of rope. The other vertical force on the man is the tension in the rope attached to the pulley above the man's head, which must be 2T for the pulley in equilibrium. The net vertical force is 3T, which is balanced by his weight of N.

Find the angle e. Find the work done. How much work does it do in pulling the box 80 cm? Work is force times displacement through which the force acts.

If the coefficient of sliding friction between carton and floor is 0. The tension in the rope is N while the box is dragged 15 m. How much work is done?

How much work does the force do in pulling the object 8 m? The work done is equal to the product of the displacement, 8 m, and the component of the force that is parallel to the displacement, 75 N cos How much work does a pulling force do on the box in pulling it 8.

The pulling force is directed 37 above the horizontal.

A continuous chain passes over the smaller lO-cm pulley, then around the movable pulley at the bottom, and finally around the cm pulley. The operator exerts a downward force F on the chain to lift the load w. Then the smaller upper pulley unwinds a length of chain equal to its circumference, 2:rcr, while the larger upper pulley winds a length 2:rcR.

As a result, the chain supporting the lower pulley is shortened by a length 2:rcR - 2:rcr. The load w is lifted half this distance,! The length of the rope which lands on the table during an interval dt following this instant is v dt. The increment of momentum imparted to the table by this length in coming to rest is m v dt v.

He is coasting along the station at a speed of 1. He wishes to change his direction of motion by 90 and to increase his speed to 2. His total mass is kg, including his spacesuit and rocket belt, which provides a thrust of 50 N. How must the rocket be pointed?

How long would this take? How much rocket fuel is used, compared to the minimum? Since the firing time is 6. Energy conservation gives! By division of equations. Since the resisting force is constant, the gun's recoil is uniformly decelerated. Its final velocity is 19 mls in the -x direction. The bat acts on the ball for 0. Find the average force F exerted on the ball by the bat. It accidentally discharges and shoots a 1O-gbullet parallel to the table. How far has the pistol moved by the time the bullet hits a wall 5 m away?

Take the recoil direction as the positive x direction. She has with her only a 3. How fast is she moving afier she throws the bag of sugar? Joseph Germano.

Fred Safier. Edda Weiss. Mary Crocker. Eugene A. Elliott Mendelson. Claudia Ross. Haym Kruglak. Frank Ayres. Elke Gschossmann-Hendershot. Robert C. John J. Murray R. Luigi Bonaffini. Edward T. Alvin Halpern. Home Contact us Help Free delivery worldwide.