(a) It is easier for a person to push an empty shopping cart than a full one where both carts are originally at rest. From this statement, choose and explain law of Newton suitable for these cases. Assume that the coefficients of static friction are the same for both carts. [Adalah lebih mudah untuk menolak bekas beli belah kosong daripada yang penuh yang mana kedua duanya berada dalam keadaan pegun. Daripada kenyataan ini, pilih dan jelaskan hukum Newton yang sesuai untuk kes ini.] (b) A couple moment, M and forces acting at point O as shown in Figure 1, could be located to point O' to obtain similar effect of translation and rotation with certain approach. Point O and O' having same height from base AB. Using appropriate sketch, explain and justify the above statement. [Momen pasangan M dan daya-daya yang bertindak pada titik o seperti yang ditunjukkan dalam Gambarajah 1, boleh diubah ke titik lain O' bagi menghasilkan kesan pemindahan dan putaran yang sama dengan menggunakan pendekatan yang tertentu. Titik O dan O' mempunyai ketinggian yang sama dari tapak AB. Dengan menggunakan lakaran yang bersesuaian, terangkan dan wajarkan penyataan di atas.]
(a) It is easier for a person to push an empty shopping cart than a full one where both carts are originally at rest. From this statement, choose and explain law of Newton suitable for these cases. Assume that the coefficients of static friction are the same for both carts. [Adalah lebih mudah untuk menolak bekas beli belah kosong daripada yang penuh yang mana kedua duanya berada dalam keadaan pegun. Daripada kenyataan ini, pilih dan jelaskan hukum Newton yang sesuai untuk kes ini.] (b) A couple moment, M and forces acting at point O as shown in Figure 1, could be located to point O' to obtain similar effect of translation and rotation with certain approach. Point O and O' having same height from base AB. Using appropriate sketch, explain and justify the above statement. [Momen pasangan M dan daya-daya yang bertindak pada titik o seperti yang ditunjukkan dalam Gambarajah 1, boleh diubah ke titik lain O' bagi menghasilkan kesan pemindahan dan putaran yang sama dengan menggunakan pendekatan yang tertentu. Titik O dan O' mempunyai ketinggian yang sama dari tapak AB. Dengan menggunakan lakaran yang bersesuaian, terangkan dan wajarkan penyataan di atas.]
International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:Andrew Pytel And Jaan Kiusalaas
Chapter7: Dry Friction
Section: Chapter Questions
Problem 7.24P: A uniform plank is supported by a fixed support at A and a drum at B that rotates clockwise. The...
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