WaterA things drifts with half its volume under the surface area of the water. The weight of the displaced water is 2000 N. The density of water is 1000 kg/m3. A bowling round of mass 7.5 kg as well as size 18 cm rolls without slipping down a 10-m bowling lane with a constant speed 4.3 m/s. Spool A is connected to the ceiling by a thread, while spool B is not attached to the ceiling. An “X” is marked on the flooring straight underneath each spindle. Consider the thread to be massless. You pull on a spring that is attached to a wall surface. You find that you should apply a 4-N pressure to stretch the spring by 2 centimeters from its un-stretched size. Just how much pressure must you relate to compress the spring by 2 centimeters from its unstretched length? D) Zero N E) You can not answer this question with the info given. C) The buoyant force initial boosts and afterwards remains constant. C) The resilient pressure coincides in both instances. C) The absolute pressure increases by Δp. What is the minimum area of the floe that will simply sustain the bear in saltwater of thickness 1030 kg/m3? Determine the stress applied on the ground because of the weight of 79 kg person standing on one foot. if the bottom of the individual’s foot is 13 centimeters broad and also 28 centimeters long. A) The stress all over in the oil will boost by Δp. 85) 3 balls are relocating along a straight line having the immediate positions shown in the number. At that split second, find the location and speed of the center of mass of this system. What is the buoyant force on the coastline round in air? The density of the plastic is about 2 mm-negligible contrasted to the radius of the round. The illustration shows 2 transverse waves taking a trip on two strings. The direct thickness of each string coincides, and the weight of each block coincides. C) The rate of the things is continuous. 3 masses A, B, and also C exist along the x-axis as shown. What is the internet gravitational force, size and direction, that acts on mass B? Home » Q&A A plastic ball has radius 12.0cm and floats in water with 24.0% of its volume submerged. What force must you apply to the ball to hold it at rest totally below the surface of
the water? If you let go of the ball, what is its acceleration the instant you release it? ρ— Density of water. Buoyant force in the first case when floating = 0.24vρg = the weight of the ball.. When fully submerged the buoyant force is v*ρg. Difference in the upward force is 0.76 vρg. Hence a downward force of 0.76(4/3) π 0.12^310009.8 = 53.9 N has to be applied. Acceleration at that instant = net force
/mass =0.76 vρg/ 0.24vρ. = 0.76*9.8/0.24 = 31.03 m/s² 1) Find the volume of the ball 2) Volume x 24% = submerged volume = displaced fluid. The weight of the displaced fluid = the weight of the ball. 3) If the ball is totally submerged it will be buoyed upward by a force equal to the weight of the fluid it is displacing – the weight of an equal volume of water. However, it is being held down by its weight. So, the force needed would be the weight of the
displaced water – the weight of the ball. 4) Now we are at F = ma. The force will be the same as the force needed to hold the ball submerged. You need to turn the ball’s weight into its mass; and either use the force found in #3, or use the (weight of the displaced water – weight of the ball) as the net force. The ruling idea behind all of this stuff is “When a body is placed in a fluid it is buoyed upward by a force equal to the weight of the displaced fluid.” That’s how stuff floats – from party balloons to battleships. Problem 76P Problem 76P A plastic ball has radius 12.0 cm and floats in water with 24.0% of its volume submerged. (a) What force must you apply to the ball to hold it at rest totally below the surface of the water? (b) If you let go of the ball, what is its acceleration the instant you release it? Step-by-Step Solution: Step 1 of 3 Solution 76P 31.0 m/ The answer to “A plastic ball has radius 12.0 cm and floats in water with 24.0% of its volume submerged. (a) What force must you apply to the ball to hold it at rest totally below the surface of the water? (b) If you let go of the ball, what is its acceleration the instant you release it?” is broken down into a number of easy to follow steps, and 55 words. Sears and Zemansky's University Physics with Modern Physics was written by and is associated to the ISBN: 9780321696861. The full step-by-step solution to problem: 76P from chapter: 12 was answered by , our top Physics solution expert on 09/09/17, 04:08AM. This full solution covers the following key subjects: ball, its, Water, must, floats. This expansive textbook survival guide covers 44 chapters, and 8517 solutions. This textbook survival guide was created for the textbook: Sears and Zemansky's University Physics with Modern Physics, edition: 13. Since the solution to 76P from 12 chapter was answered, more than 408 students have viewed the full step-by-step answer. Other solutionsDiscover and learn what students are askingPeople also purchasedRelated chapters
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A plastic ball has radius 12.0 cm and floats in water with 24.0 of its volume submerged
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