# Hookes law practical. Hooke's Law, Examples with solutions 2022-10-29

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## Practical Uses

Error The main cause of error in this experiment is reading the stretched length of the spring. In this case, stress is directly proportional to strain. No material can be compressed beyond a certain minimum size or stretched beyond a maximum size. There exists a gear arrangement in between the two springs which are connected to the dial and pointer. It is also known as the floor scale. Experiment: Find the spring constant The spring constant of a spring can be found by carrying out an experiment. Let us quickly go through them.

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## Hooke's Law

Vector Formulation If we stretch a helical spring or compress it along its axis then the restoring force, as well as the resulting elongation or compression, have the same direction. One end of the tube is open while the other end is attached to a funnel through a flexible tube. Balance Wheel of Clock The balance wheel exhibits a continuous motion with the help of a spring. Hooke's Law was also fundamental in laying the basis of various branches of science and engineering including seismology, molecular mechanics and acoustics. Recoil of a Toy Gun The toy gun consists of a spring attached to its back.

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## Prescribed practical 2: Hooke's law

The extension is the new length minus the unloaded length. Prescribed practical 2: Hooke's law - Section 2 Apparatus A steel spring, a 100g mass hanger, 12, 100g masses, a retort stand, a boss and clamp, a clamp, a metre rule, an s-hook, a pointer, safety goggles, a slotted base. The rack on one end is attached to a lever and to a spring on the other end. Furthermore, the mass is oscillated for 25 cycles and the time taken for it to reach 25 cycles is measured. Mass in kg Stretching force F in N Stretched length in cm Extension e in cm 0. Results showed as the attached mass increases, the displacement of the spring also increases and as the oscillating become heavier, the time taken for 25 cycles is longer.

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## Hooke's Law Experiment (examples, practicals, results)

. Record the new stretched length each time by reading the position of the pointer on the metre rule. In position A the spring is at rest and no external acts on the block. You should obtain at least five di ff erent measurements. Measure and record the length of the spring each time. Measure the length of the spring and record. It is named after British physicist Robert Hooke.

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## 7 Hookeâ€™s Law Examples in Real Life

It consists of a movable graduated dial and a fixed pointer that displays the magnitude of the weight. However, this will mainly depend on the forces and deformations wherein they should be very small. Make sure that the splint is horizontal and that it rests against the scale of the ruler. Add the hangar to the spring and measure the change in length. Manometer A manometer is a device used to measure and indicate the pressure of a liquid. Health and safety The spring will store energy as it is loaded.

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## Hooke's Law and Projectile webapi.bu.edu

The spring is attached to the centre of the balance wheel on one end, whereas the other end of the spring is fixed. When the trigger of a toy gun is pressed, it releases the toy bullet and quickly gets recoiled with the help of a spring attached to its base. Spring Scale A spring scale is not commonly used by vegetable and fruit vendors rather it is used to weigh heavy loads such as trucks, storage silos, etc. It is also helpful in studying the behaviour of the springs. Two spring is used to attach with different mass and the displacement is taken.

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## 2.3 Hooke's law practical (1).pdf

Whenever a spring is stretched or compressed, it conserves all energy applied to it. Brittleness: It implies that material cannot be drawn out in the form of wire. Robert Hooke's creation has allowed for countless discoveries and advancement's in various fields of science and engineering. Conclusion We can see from the graph that as the stretching force increases the extension of the spring also increases. The spring and the lever help the rack to move according to the pressure exerted by the body placed on the scale. This restoring force opposes the deformation force and tries to maintain the original dimensions of the material. Note â€” Here the direction of the force is in the direction opposite that of the displacement, so consider minus sign.

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## Experiment: Find the spring constant

This law is further the most fundamental principle behind the galvanometer, spring scale, manometer and balance wheel of a mechanical clock. These studies influenced Hooke's design for the balance springs of watche s. Usually, a click pen consists of springs that are attached to the top and the bottom of the ink cartridge. The gear gets shifted as per the weight of the object attached to the hook, and the pointer deflects accordingly, thereby allowing the graduated scale to point to the accurate weight. According to Newton's third law, if a spring is stretched or compressed using force F, as a reaction the spring also react by a force - F.

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## Hooke's Law, Examples with solutions

When the funnel is dipped in a liquid-filled container, the molecules of the fluid exert pressure on the rubber film that displaces the water present in the tube to one side. We can say that the stretching force F is directly proportional to the extension e up to a limit known as the limit of proportionality. Join the points with a line of best fit. If the spring were to unload suddenly or snap all that. Use a slotted base to secure the metre stick and ensure that it is vertical. The pointer should just touch the metre rule.

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Record this length in the table. Measure the mass of the hangar and record. Hooke's Law has had various important applications, such as laying the foundation of studies regarding stress, strain, and understanding elastic materials. The instances may include the wind blowing on a tall building or a musician playing the guitar. When you have collected all your date please continue to add weight until the spring no longer behaves elastically. The law will eventually fail after certain conditions.

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