
A wooden block floats in water, and a steel object is attached to the bottom of the block by a string as in Figure OQ15.1. If the block remains floating, which of the following statements are valid? (Choose all correct statements.) (a) The buoyant force on the steel object is equal to its weight. (b) The buoyant force on the block is equal to its weight. (c) The tension in the string is equal to the weight of the steel object. (d) The tension in the string is less than the weight of the steel object. (e) The buoyant force on the block is equal to the volume of water it displaces.

The statements which are valid.
Answer to Problem 1OQ
Option (d).
Explanation of Solution
Buoyant force is the upward force exerted by a fluid on any immersed object. The magnitude of the buoyant force on an object always equals the weight of the fluid displaced by the object. Since the buoyant force is exerted by the fluid, it is not determined by the properties of the object except the amount of fluid displaced by it.
The buoyant force on the steel object is not equal to its weight since there are other forces acting on it. Similarly, the buoyant force on the block is either not equal to its weight. The weight of the steel object is not balanced by the tension in the string so that the tension is less than the weight of the steel object.
Conclusion:
Since the tension in the string is less than the weight of the steel object, option (d) is correct.
Since the buoyant force on the steel object is not equal to its weight, option (a) is incorrect.
Since the buoyant force on the block is not equal to its weight, option (b) is incorrect.
Since the tension in the string is not equal to the weight of the steel object, option (c) is incorrect.
Since the buoyant force on the block is not equal to the volume of the water it displaces but the weight of the water it displaces, option (e) is incorrect.
Want to see more full solutions like this?
Chapter 15 Solutions
Principles of Physics: A Calculus-Based Text
Additional Science Textbook Solutions
College Physics: A Strategic Approach (3rd Edition)
Organic Chemistry
Fundamentals Of Thermodynamics
Human Anatomy & Physiology (2nd Edition)
- Solve and answer the problem correctly and be sure to check your work. Thank you!!arrow_forwardThe spring in the figure has a spring constant of 1300 N/m. It is compressed 17.0 cm, then launches a 200 g block. The horizontal surface is frictionless, but the block’s coefficient of kinetic friction on the incline is 0.200. What distance d does the block sail through the air?arrow_forwardSolve and answer the problem correctly and be sure to check your work. Thank you!!arrow_forward
- Solve and answer the problem correctly and be sure to check your work. Thank you!!arrow_forwardA 10-m-long glider with a mass of 680 kg (including the passengers) is gliding horizontally through the air at 28 m/s when a 60 kg skydiver drops out by releasing his grip on the glider. What is the glider's speed just after the skydiver lets go?arrow_forwardPROBLEM 2 A cube of mass m is placed in a rotating funnel. (The funnel is rotating around the vertical axis shown in the diagram.) There is no friction between the cube and the funnel but the funnel is rotating at just the right speed needed to keep the cube rotating with the funnel. The cube travels in a circular path of radius r, and the angle between the vertical and the wall of the funnel is 0. Express your answers to parts (b) and (c) in terms of m, r, g, and/or 0. (a) Sketch a free-body diagram for the cube. Show all the forces acting on it, and show the appropriate coordinate system to use for this problem. (b) What is the normal force acting on the cube? FN=mg58 (c) What is the speed v of the cube? (d) If the speed of the cube is different from what you determined in part (c), a force of friction is necessary to keep the cube from slipping in the funnel. If the funnel is rotating slower than it was above, draw a new free-body diagram for the cube to show which way friction…arrow_forward
- Circular turns of radius r in a race track are often banked at an angle θ to allow the cars to achieve higher speeds around the turns. Assume friction is not present. Write an expression for the tan(θ) of a car going around the banked turn in terms of the car's speed v, the radius of the turn r, and g so that the car will not move up or down the incline of the turn. tan(θ) =arrow_forwardThe character Min Min from Arms was a DLC character added to Super Smash Bros. Min Min’s arms are large springs, with a spring constant of 8.53 ⋅ 10^3 N/m, which she uses to punch and fling away her opponents. Min Min pushes her spring arm against Steve, who is not moving, compressing it 1.20 m as shown in figure A. Steve has a mass of 81.6 kg. Assuming she uses only the spring to launch Steve, how fast is Steve moving when the spring is no longer compressed? As Steve goes flying away he goes over the edge of the level, as shown in figure C. What is the magnitude of Steve’s velocity when he is 2.00 m below where he started?arrow_forwardSlinky dog whose middle section is a giant spring with a spring constant of 10.9 N/m. Woody, who has a mass of 0.412 kg, grabs onto the tail end of Slink and steps off the bed with no initial velocity and reaches the floor right as his velocity hits zero again. How high is the bed? What is Woody’s velocity halfway down? Enter just the magnitude of velocity.arrow_forward
- No chatgpt pls will upvotearrow_forwardA positive charge of 91 is located 5.11 m to the left of a negative charge 92. The charges have different magnitudes. On the line through the charges, the net electric field is zero at a spot 2.90 m to the right of the negative charge. On this line there are also two spots where the potential is zero. (a) How far to the left of the negative charge is one spot? (b) How far to the right of the negative charge is the other?arrow_forwardA charge of -3.99 μC is fixed in place. From a horizontal distance of 0.0423 m, a particle of mass 7.31 x 103 kg and charge -9.76 µC is fired with an initial speed of 84.1 m/s directly toward the fixed charge. How far does the particle travel before its speed is zero?arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers with Modern ...PhysicsISBN:9781337553292Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
- Physics for Scientists and EngineersPhysicsISBN:9781337553278Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax CollegePhysics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning





