COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 9, Problem 34QAP
To determine
The force needed to bend a bar of 0.5-in. rebar. (Rebar is made from iron and is used to reinforce concrete.)?
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Chapter 9 Solutions
COLLEGE PHYSICS
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- Bone has a Youngs modulus of 18 109 Pa. Under compression, it can will island a stress or about 160 106 Pa before breaking. Assume that a femur (thigh bone) is 0.50 m long, and calculate the amount of compression this bone can withstand before breaking.arrow_forwardCalculate the force a piano tuner applies to stretch a steel piano wire by 8.00mm , if the wire is originally 1.35m long and its diameter is 0.850mm .arrow_forwardBone has a Youngs modulus of 18 109 Pa. Under compression, it can will island a stress or about 160 106 Pa before breaking. Assume that a femur (thigh bone) is 0.50 m long, and calculate the amount of compression this bone can withstand before breaking.arrow_forward
- A vertebra is subjected to a shearing force of 500 N. Find the shear deformation, taking the vertebra to be a cylinder 3.00 cm high and 4.00 cm in diameter.arrow_forwardIs surface tension due to cohesive or adhesive forces, or both?arrow_forwardA disk between vertebrae in the spine is subjected to a shearing force of 600.0N . Find its shear deformation, using the shear modulus of 1.0109N/m2 . The disk is equivalent to a solid cylinder 0.700cm high and 4.00cm in diameter.arrow_forward
- A farmer making grape juice fills a glass bottle to the brim and caps it tightly. The juice expands more than the glass when it warms up, in such a way that the volume increases by 0.2 . Calculate the force exerted by the juice per square centimeter if its bulk modulus is 1.8109N/m2 , assuming the bottle does not break.arrow_forwardThe pole in Figure 5.24 is at a 90.0° bend in a power line and is therefore subjected to more shear force than poles in straight parts of the line. The tension in each line is 4.00104 N, at the angles shown. The pole is 15.0 m tall, has an 18.0 cm diameter, and can be considered to have half the stiffness of hardwood. (a) Calculate the compression of the pole. (b) Find how much it bends and in what direction. (c) Find the tension in a guy wire used to keep the pole straight if it is attached to the top of the pole at an angle of 30.0° with the vertical. (Clearly, the guy wire must be in the opposite direction of the bend.)arrow_forwardWhen water freezes, its volume increases by 9.05 . What force per unit area is water capable of exerting on a container when it freezes?arrow_forward
- Why does a sailboat need a keel?arrow_forwardA copper wire of diameter 1.0cm stretches 1.0 when it is used to lift a load upward with an acceleration of 2.0m/s2 . What is the weight of the load?arrow_forwardOne end of a vertical metallic wire of length 2.0m and diameter 1.0mm is attached to a ceiling, and the other end is attached to a 5.0N weight pan, as shown below. The position of the pointer before the pan is 4.000cm . Different weights are then added to the pan area, and the position of the pointer is recorded in the table shown. Plot stess versus strain for this wire, then the use the resulting curve to determine Young’s modulus and the proportionality limit of the metal. What metal is this most likely to be?arrow_forward
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