Consider a string of total length L, made up of three segments of equal length. The mass per unit length of the first segment is u, that of the second is 2µ, and that of the third u/4. The third segment is tied to a wall, and the string is stretched by a force of magnitude T, applied to the first segment; T, is much greater than the total weight of the string.

Consider a string of total length L, made up of three segments of equal length. The mass per unit length of the first segment is u, that of the second is 2µ, and that of the third u/4. The third segment is tied to a wall, and the string is stretched by a force of magnitude T, applied to the first segment; T, is much greater than the total weight of the string.

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter5: Newton's Law Of Motion

Section: Chapter Questions

Problem 89AP: In building a house, carpenters use nails from a large box. The box is suspended from a spring twice...

See similar textbooks

Similar questions

A newborn baby’s brain grows rapidly. In fact,it has been found to increase in mass by about 1.6 mg per minute.(a) How much does the brain’s weight increase in one day? (b) Howmuch time does it take for the brain’s weight to increase by 0.15 N?
In Melde's experiment, find weight added in the pan when number of loops on the string changes from 4 to 2. If initial tension on the string is 1960 dyne and mass of the pan is one gram.
(a) A mass of 2-Kg box hangs by an inextensible and massless string from a support. A horizontal force of 10 N acts on the box until it is in equilibrium as shown in the figure. Find the angle that the rope makes with the vertical. F= 10 N 2 kg
An object is acted on by two forces, 10i + 3j and (with magnitudes in newtons). The object has an acceleration of 2ms-2 in the direction of the resultant force. What is the mass of the object in kilograms to two significant figures?
Titania, the largest moon of the planet Uranus, has 18the radiusof the earth and 1/1700 the mass of the earth. (a) What is the accelerationdue to gravity at the surface of Titania? (b) What is the average densityof Titania? (This is less than the density of rock, which is one piece ofevidence that Titania is made primarily of ice.)
( 45 a M > 1:0Y HW1.pdf > Chapter 1 HW1 Exercises 1. A force P = 800 N is shown in Fig. a. Find the y-component of P with respect to x and y axis. b. Find the y'-component of P with respect to x' and y' axis. c. Find the y-component of P with respect to x' and y axis. d. Find the y'-component of P with respect to x and y' axis. P = 800 N X' 2. A block is resting on an incline of slope 5:12 as shown in Fig. It is subjected to a force F = 500 N on a slope of 3:4. Determine the components of F parallel and perpendicular to the incline. F = 500 N
A very light wire is used to hang a series of 8.0-kg bricks. This wire will break if the tension in it exceeds 450 N. The bricks are hung one below the other from a hook in the ceiling using this wire, as shown in the figure. (a) How many whole bricks can be hung without breaking the wire? (b) If you add one more brick to the number found in part (a), which string will break? HHH
In a repair shop a truck engine that has mass 409 kg is held in place by four light cables . Cable A is horizontal, cables B and D are vertical, and cable C makes an angle of 37.1o with a vertical wall. If the tension in cable A is 722 N, what are the tensions in cables B and C?
An airplane in flight is subject to an air resistanceforce proportional to the square of its speed v. But there is an additionalresistive force because the airplane has wings. Air flowing over thewings is pushed down and slightly forward, so from Newton’s third lawthe air exerts a force on the wings and airplane that is up and slightlybackward (Fig.). The upward force is the lift force that keeps theairplane aloft, and the backward force is called induced drag. At flyingspeeds, induced drag is inversely proportional to v2, so the total airresistance force can be expressed by Fair = av2 + b/v2, where a andb are positive constants that depend on the shape and size of the airplaneand the density of the air. For a Cessna 150, a small single-engineairplane, a = 0.30 N . s2/m2 and b = 3.5 * 105 N . m2/s2. In steadyflight, the engine must provide a forward force that exactly balances theair resistance force. (a) Calculate the speed 1in km>h2 at which this airplanewill have the maximum…
An inextensible cable of negligible mass is used to drag a log on a roughhorizontal surface. The tension in the cable is 850 N and it acts at an angle of 35°to the horizontal. The log is dragged over a distance of 45m. The frictional forceexperienced by the log is 150 N. Calculate the net force acting on the log.
Four strings are attached to a wooden block. One string is pulled with 5.0N force towards y. The second string is pulled with 10N towards 30 degrees above X. The third string is pulled with 5N towards Y. The fourth string is pulled such that the net force experienced by the wooden block is zero. determine the magnitude of the force on the fourth string.
If a coefficient of friction between a box and the floor is 0.2, and there is a maximum friction force of 80N, what must the mass of the box be?