Results lab 7

Part A You are asked to design spring bumpers for the walls of a parking garage. A freely rolling 1200 kg car moving at 0.63 m/s is to compress the spring no more than 0.078 m before stopping. What should be the force constant of the spring? Assume that the spring has negligible mass. Express your answer in newtons per meter. a x•10" k = N/m Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Provide Feedback

The specific dynamic action (SDA) is measured for an animal is fed 300 g of food. This measurement is repeated a few days later, after the animal has been fed 100 g of food. According to the usual model of SDA, how will the magnitude of the second SDA compare with the first SDA measurement. A) It will be about the same B) It will be about three times as much C) It will be more than three times as much D) It will be about 1/3 as much E) It is not possible to estimate

A 2000 kg car traveling at a speed of 16 m/s skids to a halt on wet concrete where k = 0.30. For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution. Part A How long are the skid marks? Express your answer in meters. L = Submit 15. ΑΣΦ Review I Constants I Periodic Table Provide Feedback Request Answer ? m Next >

Fs = kx 6000 N= 400 N/m x = 15 cm 6.In a spring experiment the results were as follows: Force (N) 1 4 5 7 Length (mm) 50 58 70 74 82 90 102 125 Extension (mm) 8 20 24 32 40 52 75 a. What is the length of the spring when unstretched? b. Complete the 'Extension' row of the table C. Plot a graph of extension against force. Circle the anomalous point. d. Mark the limit of proportionality on your graph (elastic limit). е. What load would give an extension of 30mm? f. What would be the spring length for a load of 4.5N? g. Extension: Determine a value for the spring constant in this example. DELL

EXCEL Spring Problem:   An experiment is conducted to determine the value of a spring constant. Objects of varied mass are suspended from the spring and the spring deflections are measured. The results are as follows:   Mass, m (kg) Deflection, x (mm) 5.3 15 7.1 22 10.2 31 12 38 15.4 45   Use EXCEL to determine the spring constant, k, in N/m.

A 64 kg student is standing atop a spring in an elevator that is accelerating upward at 3.2 m/s?. The spring constant is 2400 N/m. Part A You may want to review (Pages 219 - 221) . By how much is the spring compressed? Express your answer to two significant figures and include the appropriate units. Ay = Value Units

A Hooke’s Law spring is compressed 15.0 cm by an applied force of 75 N. This compressed spring is then used to project a 23.0 g marble straight up into the air. To what maximum height does the marble rise? Draw a diagram of situation

A mass is sliding on a frictionless surface with a speed v. It runs into a linear spring with a spring constant of k, which compresses from position xi to position xf. 1)Write a general expression for the force that the spring exerts on the mass, in term of k and x. Choose the initial position of the front of the spring to be xi=0.  2)Select the equation that correctly describes the work done by the spring to stop the mass.  3)Evaluate the relationship in part (b) to arrive at an expression for the work done in terms of known variables.  4) Solve for the numerical value of the work done in Joules given that xi = 0, xf = 42 cm, and k = 105 N/m.

You push a 2.0 kg block against a horizontal spring, compressing the spring by 15 cm. Then you release the block, and the spring sends it sliding across a tabletop. It stops 75 cm from where you released it. The spring constant is 200 N/m. What is the block–table coefficient of kinetic friction? Draw free-body diagram.

letter B)Determine the velocity of the block when it slides at a distance of 0.6m from point A. and letter A)Determine the distance the block will slide until it stops measured from point A.

Suppose that the speed that a fish can swim depends on the 3/2 power of the length of the fish. Also suppose that that a herring with the length of 0.30 meters swims at a speed of 1.67 m/s.  a)Find the particular equation showing the relationship between swimming speed and length for this herring b)

Considering the spring shown below with spring coefficient = 2000 N/mm, mass = 400 kg and original length = 300 mm. Calculate the actual length of this spring after effecting the load. = 2000 N/mm Hibbeler, 2006 Select one: O i. 302 mm ii. 298 mm iii. 200 mm iv. 300 mm www

Hooke's law can be used to describe how much force is needed to stretch a spring a certain distance. For a certain spring, this relationship can be modeled by y = 0.25x .The graph of this relationship is and

A spring gun shoots out a plastic ball at speed vo. The spring is then compressed twice the distance it was on the first shot. Part A By what factor is the ball's speed increased? v' /vo = Submit IVE ΑΣΦ Request Answer ?

Hooke’s Law Hooke’s Law states that the force needed tokeep a spring stretched x units beyond its natural length isdirectly proportional to x. Here the constant of proportionality is called the spring constant.(a) Write Hooke’s Law as an equation.(b) If a spring has a natural length of 5 cm and a force of30 N is required to maintain the spring stretched to alength of 9 cm, find the spring constant.(c) What force is needed to keep the spring stretched to alength of 11 cm?

H k -0000- -X-- Problem 9 A block of mass m = 3 kg is initially at a height H = 0.4 m above the bottom of a frictionless ramp as in the diagram above. The block slides down the ramp and eventually encounters a spring. The block compresses the spring by an amount x = 0.02 m before momentarily coming to rest. What is the spring constant, k, describing the stiffness of the spring? Remember, g = 9.8 m/s². Don't forget units!

Please give explanation on what's the right answer.A block of mass M is attached to the lower end of a vertical spring. The spring is hung from the ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum tension produced in the length of the spring will be _____.a. 2Mg/kb. 4Mg/k c. Mg/2k d. Mg/k

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A nonlinear spring is compressed horizontally. The spring exerts a force that obeys the equation F(x) = Ax^½, where x is the distance from equilibrium that the spring is compressed and A is a constant. A physics student records data on the force exerted by the spring as it is compressed and plots the two graphs below, which include the data and the student's best-fit curves. a. From one or both of the given graphs, determine A. Be sure to show your work and specify the units.b. i. Determine an expression for the work done in compressing the spring a distance x.ii. Explain in a few sentences how you could use one or both of the graphs to estimate a numerical answer to part (b)i for a given value of x.c. The spring is mounted horizontally on a countertop that is 1.3 m high so that its equilibrium position is just at the edge of the countertop. The spring is compressed so that it stores 0.2 J of energy and is then used to launch a ball of mass 0.10 kg horizontally from the countertop.…

Learning Goal: To understand the use of Hooke's law for a spring. Hooke's law states that the restoring force F on a spring when it has been stretched or compressed is proportional to the displacement of the spring from its equilibrium position. The equilibrium position is the position at which the spring is neither stretched nor compressed. Recall that Fx I means that F is equal to a constant times 2. For a spring, the proportionality constant is called the spring constant and denoted by k. The spring constant is a property of the spring and must be measured experimentally. The larger the value of k, the stiffer the spring. In equation form, Hooke's law can be written F = -kz. The minus sign indicates that the force is in the opposite direction to that of the spring's displacement from its equilibrium length and is "trying" to restore the spring to its equilibrium position. The magnitude of the force is given by F = kx, where z is the magnitude of the displacement. ▼ A 62 kg driver…

4) Now the elevator is moving downward with a velocity of v = -2.1 m/s but accelerating upward with an acceleration of a = 3.9 m/st. (Note: an upward acceleration when the elevator is moving down means the elevator is slowing down.) What is the force the bottom spring exerts on the bottom mass? N Submit 5) What is the distance the upper spring is extended from its unstretched length? cm ( Submit 6) Finally, the elevator is moving downward with a velocity of v = -2.5 m/s and also accelerating downward at an acceleration of a = -2.3 m/s?. The elevator is: Ospeeding up Oslowing down O moving at a constant speed Şubmit 7) Rank the distances the springs are extended from their unstretched lengths: Ox, = X2 = X3 Ox, > x2 > X3 Ox, < x2 < X3 Submit + 8) What is the distance the MIDDLE spring is extended from its unstretched length? cm ( Submit ...... ........-

The ceiling of an arena is 22 m above the floor. What is the minimum speed that a thrown ball would need to just reach the ceiling

. For a spring-powered candy dispenser, which of the statements correctly expresses the relationship of the candy’s speed to the compression of the spring? The speed is proportional to the square root of the compression distance of the spring  The speed is directly proportional to the compression distance of the spring The speed is inversely proportional to the compression distance of the spring  The speed is proportional to the square of the compression distance of the spring  None of these statements are correct

1. A block of mass m = 10 Kg is at rest on the inclined plane seen at figure 1. The coefficient of static friction between the block and the plane is µ, = 0.5 N/Kg. The block of mass m is pulled by a force F =100 N through a spring of force constant k = 0.3 as seen in figure 1. The block is pushed against a spring, compressing it. Determine the speed of the block after the block is released (g = 10 m/s²). k

A crate with mass m is placed above a ramp with an angle 0, and a distance L from a spring with a spring constant k. Suppose that the ramp and crate experience a coefficient of kinetic friction u, solve for the following: a. speed of crate before it compresses the spring b. maximum compression of the spring C. How far does the crate get to its initial distance when it rebounds? Wwwww

Learning Goal: To understand the use of Hooke's law for a spring. Hooke's law states that the restoring force F on a spring when it has been stretched or compressed is proportional to the displacement of the spring from its equilibrium position. The equilibrium position is the position at which the spring is neither stretched nor compressed. Recall that Fx means that F is equal to a constant times . For a spring, the proportionality constant is called the spring constant and denoted by k. The spring constant is a property of the spring and must be measured experimentally. The larger the value of k, the stiffer the spring. In equation form, Hooke's law can be written F = -kx. The minus sign indicates that the force is in the opposite direction to that of the spring's displacement from its equilibrium length and is "trying" to restore the spring to its equilibrium position. The magnitude of the force is given by F = kx, where x is the magnitude of the displacement. Part A Part B After…

Learning Goal: To understand the use of Hooke's law for a spring. Hooke's law states that the restoring force F on a spring when it has been stretched or compressed is proportional to the displacement of the spring from its equilibrium position. The equilibrium position is the position at which the spring is neither stretched nor compressed. Recall that Fx means that F is equal to a constant times . For a spring, the proportionality constant is called the spring constant and denoted by k. The spring constant is a property of the spring and must be measured experimentally. The larger the value of k, the stiffer the spring. In equation form, Hooke's law can be written F = -kz. The minus sign indicates that the force is in the opposite direction to that of the spring's displacement from its equilibrium length and is "trying" to restore the spring to its equilibrium position. The magnitude of the force is given by F = kx, where is the magnitude of the displacement. In Haiti, public…

1. Calculate the work done on the suitcase by  F→. Express your answer with the appropriate units. 2. Calculate the work done on the suitcase by the gravitational force. Express your answer with the appropriate units. 3.Calculate the work done on the suitcase by the normal force. Express your answer with the appropriate units. 4. Calculate the work done on the suitcase by the friction force. Express your answer with the appropriate units. 5. Calculate the total work done on the suitcase. Express your answer with the appropriate units. 6. If the speed of the suitcase is zero at the bottom of the ramp, what is its speed after it has traveled 3.90 mm along the ramp? Express your answer with the appropriate units.

*Chapter 8, Problem 24 A block of mass m = 1.5 kg is dropped from height h = 78 cm onto a spring of spring constant k 2190 N/m (see the figure). Find the maximum distance the spring is compressed. Number 1 Units