Concept explainers
A 0.122-kg remote control 23.0 cm long rests on a table, as shown in Figure 11-44, with a length L overhanging its edge. To operate the power button on this remote requires a force of 0.365 N. How far can the remote control extend beyond the edge of the table and still not tip over when you press the power button? Assume the mass of the remote is distributed uniformly, and that the power button is 1.41 cm from the overhanging end of the remote.
Figure 11-44 Problem 27
Trending nowThis is a popular solution!
Chapter 11 Solutions
EBK PHYSICS
Additional Science Textbook Solutions
Concepts of Genetics (12th Edition)
Fundamentals of Anatomy & Physiology (11th Edition)
Microbiology: An Introduction
Microbiology: An Introduction
Human Anatomy & Physiology (2nd Edition)
College Physics: A Strategic Approach (3rd Edition)
- A uniform ladder of length L and mass m1 rests against a frictionless wall. The ladder makes an angle with the horizontal. (a) Find the horizontal and vertical forces the ground exerts on the base of the ladder when a firefighter of mass m2 has climbed a distance x along the ladder from the bottom. (b) If the ladder is just on the verge of slipping when the firefighter is a distance d along the ladder from the bottom, what is the coefficient of static friction between ladder and ground?arrow_forwardIn the What If? section of Example 12.2, let d represent the distance in meters between the person and the hinge at the left end of the beam. (a) Show that the cable tension is given by T = 93.9d + 125, with T in newtons. (b) Show that the direction angle of the hinge force is described by tan=(323d+41)tan53.0 (c) Show that the magnitude of the hinge force is given by R=8.82103d29.65104d+4.96105 (d) Describe how the changes in T, , and R as d increases differ from one another.arrow_forwardIn Figure 9.21, the cg of the pole held by the pole vaulter is 2.00 m from the left hand, and the hands are 0.700 m apart. Calculate the force exerted by (a) his right hand and (b) his left hand. (c) If each hand supports half the weight of the pole in Figure 9.19, show that the second condition for equilibrium (net =0 ) is satisfied for a pivot other than the one located at the center of gravity of the pole. Explicitly show how you follow the steps in the Problem-Solving Strategy for static equilibrium described above. Figure 9.21 A pole vaulter is holding a pole horizontally with both hands. The center of gravity is to the left side of the vaulter.arrow_forward
- A uniform plank 8.00 m in length with mass 65.0 kg is supported at two points located 1.00 m and 5.00 m, respectively, from the left-hand end. What is the maximum additional mass you could place on the right-hand end of the plank and have the plank still be at rest?arrow_forwardHER A man holds a 175-N ball in his hand, with the forearm horizontal (see the drawing). He can support the ball in this position because of the flexor muscle force M, which is applied perpendicular to the forearm. The forearm weighs 21.4 N and has a center of gravity as indicated. Upper am bone Flexor muscle cing fc Elbow joint 89) 00510 m r 0.0890 m 0.330 m- (a) Find the magnitude of M 1149 X N (b) Find the magnitude and direction of the force applied by the upper arm bone to the forearm at the elbow joint. magnitude direction downward Additional Materials Book ??TO MacBook Ait 7.arrow_forwardFor the simply supported beam, We would like to determine the internal loads at point E, which is halfway between B and C. Given: T=41 KN a= 20 deg M= 29 kN.m 20 kN M BE T a D C 5m-3m - 2m-| +2.5m Calculate the internal Bending Moment at point E in kN.m.arrow_forward
- 8-P10. The rectangular plate shown weighs 75 lb and is held in the position shown by hinges at A and B and by cable EF. If the hinge at B is removed and the hinge at A can exert couples about axes parallel to the y and z axes, determine (a) the tension in the cable, (b) the reactions at A and В. 4 in. F 12 in. 4 in. 25 in. B 30 in. 20 in. 8 in.arrow_forwardProblem 8: Consider a rigid steel beam of length L = 11.5 m and mass mb = 412 kg resting on two supports, one at each end. A worker of mass mw = 78 kg sits on the beam at a distance x from support A. Refer to the figure, though note that it is not drawn to scale. Part (a) When the worker sits at a distance x = 4.5 m from support A, calculate the force, in newtons, that support B must exert on the beam in order for it to remain at rest. Use g with three significant figures. Part (b) The force exerted on the beam by support A is measured and found to be FA = 2180 N. At what distance x, in meters, from support A is the worker sitting now?arrow_forwardA homeowner is trying to move a stubborn rock from his yard. By using a a metal rod as a lever arm and a fulcrum (or pivot point) the homeowner will have a better chance of moving the rock. The homeowner places the fulcrum a distance ?=0.288 mfrom the rock, which has a mass of 465 kg, and fits one end of the rod under the rock's center of weight. If the homeowner can apply a maximum force of 671 N at the other end of the rod, what is the minimum total length ? of the rod required to move the rock? Assume that the rod is massless and nearly horizontal so that the weight of the rock and homeowner's force are both essentially vertical. The acceleration due to gravity is ?=9.81 m/s2.arrow_forward
- A seesaw consisting of a 1-kg board and length of 4 m balances Tony and Steve, as shown below. The support is under the center of gravity of the board, and Tony, with a mass of 30 kg, is seated 2 m from the support. a) Determine the distance from the support at which Steve (m = 35 kg) must sit to balance the system at rest. b) Find the magnitude of the upward force exerted by the support on the board. Steve Tony m = 30 kg m = 35 kg %3D Activate Windowarrow_forwardTwo children of mass 19 kg and 27 kg sit balanced on a seesaw with the pivot point located at the center of the seesaw. a) If the children are separated by a distance of 3.00 m, at what distance from the pivot point is the small child sitting in order to maintain the balance?arrow_forwardThe pole has insignificant weight.Thehorizontal and vertical components of the force of the hinge are ______ and _____ respectively Choices: 800 N, 800N 800 N, 600N 0 N, 800N 600 N, 800N 1200 N,800N Show complete solution and free body diagramarrow_forward
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
- Physics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning