APPLICATIONS ELASTICITY Rubber Band Spring Sponge F = Force applied k = Spring constant x = Extension of spring Formula for Hooke’s Law : Springs can be arranged in series or in parallel (Arrangement of Springs) Series Parallel *which k can be obtained by calculating the gradient of the graph (ONLY if we sketch the graph F against x) Elasticity ELASTICITY C H A P T E R 1 : F O R C E A N D Karnival&Bulan M O T I O N I I STEMPLB 2023/2024 Sarah Najihah binti Syahrul Idzuan (5WC) Aisha Amani binti Abdillah (5WC) 1. 2. Prepared by: PameranSains MataPelajaran: Fizik Tarikh: 12Julai2023 Tempat:MakmalSains3 definition : the property of material that enables an object to return to its original shape and size after the force applied on it is removed Hooke’s Law : the extension of a spring is directly propotional to the force applied on the spring provided the elastic limit of the spring is not exceeded By referring to the graph F against x and the equation of F=kx , we can obtain 2 equations/formula for Elastic Potential Energy in terms of : a) F and x 1/2 F x b) k and x 1/2 k x^2
The apparatus was set up as shown in the diagram. The zero mark on the halfmetre rule is at the same level as the upper end of the spring The original length of the spring, lo was measured and determined The spring was then applied a 20g slotted weights The new length of the spring, l was measured. The experiment was then carried out using 40g,60g,80g and 100g of slotted weights. The new lengths of the spring was measured and recorded in a table. 1. 2. 3. 4. 5. F o u r f a c t o r s t h a t a f f e c t t h e v a l u e o f t h e s p r i n g c o n s t a n t Experiment Report 1.1 Procedures: To determine the relationship between the Force, F and Extension of the Spring, x Aim: The larger the force applied on the spring, the larger the extension of the spring Hypothesis: a) Manipulated : Force, F b) Responding : Extension of the spring, x c) Constant : Stiffness of spring Variables: Apparatus : Spring with length not less than 10cm, five pieces of 20g slotted weights,halfmetre ruler and retort stands with clamps Materials: Pin and Plasticine Listofmaterials& apparatus: Diagram: Original length of spring : 8.50 cm Result: Graph: Force, F is directly propotional with Extension of Spring, x Conclusion: ELASTICITY C H A P T E R 1 : F O R C E A N D M O T I O N I I E L A S T I C I T Y
APLIKASI KEKENYALAN Getah Spring Span F = Daya diaplikasikan k = Kemalaran spring x = Pemanjangan spring Formula Hukum Hooke: Spring boleh disusun secara sesiri atau secara selari (Susunan bagi spring) Sesiri Selari *k yang boleh diperolehi dengan mengira kecerunan graf (JIKA kita melakar graf F melawan x) Kekenyalan KEKENYALAN B A B 1 : D A Y A D A N G E R A K A N I I Karnival&Bulan STEMPLB 2023/2024 Sarah Najihah binti Syahrul Idzuan (5WC) Aisha Amani binti Abdillah (5WC) 1. 2. Disediakan oleh: PameranSains MataPelajaran: Fizik Tarikh: 12Julai2023 Tempat:MakmalSains3 Definisi : sifat bahan yang membolehkan objek kembali kepada bentuk dan saiz asalnya selepas daya yang dikenakan ke atasnya dikeluarkan Hukum Hooke : keregangan spring adalah berkadar terus dengan daya yang dikenakan pada spring dengan syarat had kenyal spring tidak melebihi hadnya Bedasarkan graf F melawan x dan persamaan F=kx , kita boleh memperoleh 2 persamaan/rumus Tenaga Keupayaan Kekenyalan dari segi : a) F dan x 1/2 F x b) k dan x 1/2 k x^2
E m p a t f a c t o r y a n g m e m p e n g a r u h i n i l a i p e m a l a r s p r i n g Graf: Radas telah disediakan seperti yang ditunjukkan dalam rajah. Tanda sifar pada pembaris setengah-meter adalah pada paras yang sama dengan hujung atas spring Panjang asal spring, lo telah diukur dan ditentukan Pemberat spring seberat 20g diletakkan pada spring Panjang baharu spring, l dicatat Eksperimen kemudiannya dijalankan menggunakan 40g,60g,80g dan 100g pemberat berslot. Panjang baharu spring diukur dan direkodkan dalam jadual. 1. 2. 3. 4. 5. laporan eksperimen 1.1 Prosedur: Untuk menentukan hubungan antara Daya, F dan Regangan Spring, x Tujuan: Semakin bertambah daya yang dikenekan kepada spring, semakin bertambah Regangan spring Hipotesis: a) Dimanipulasi : Daya, F b) Tindak balas : Kereganagan spring, x c) Dimalarkan : Kekerasan spring Pembolehubah: Radas : Spring dengan panjang tidak kurang daripada 10.0cm, lima keping pemberat berslot 20g, pembaris setengah-meter dan kaki retort dengan pengapit Bahan: Pin and plastesin Bahan&Radas: Rajah: Panjang asal spring : 8.50 cm Keputusan: Daya, F berkadarterus dengan Pemanjangan Spring, x Kesimpulan: KEKENYALAN B A B 1 : D A Y A D A N G E R A K A N I I K E K E N Y A L A N