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![SOLVED: (9) A short train consists of two locomotives, each of mass 20 tonnes, with a truck of mass 10 tonnes coupled between them, as shown in Figure 20.53. The resistances to SOLVED: (9) A short train consists of two locomotives, each of mass 20 tonnes, with a truck of mass 10 tonnes coupled between them, as shown in Figure 20.53. The resistances to](https://cdn.numerade.com/ask_images/0c788b40d41942d4a7c67ae00d360200.png)
SOLVED: (9) A short train consists of two locomotives, each of mass 20 tonnes, with a truck of mass 10 tonnes coupled between them, as shown in Figure 20.53. The resistances to
![An aeroplane of mass M requires a speed v for take - off. The length of runway is s and the coefficient of friction between the tyres and the ground is mu . An aeroplane of mass M requires a speed v for take - off. The length of runway is s and the coefficient of friction between the tyres and the ground is mu .](https://dwes9vv9u0550.cloudfront.net/images/10197528/d8a4464f-0e36-4efb-a532-067a19162731.jpg)
An aeroplane of mass M requires a speed v for take - off. The length of runway is s and the coefficient of friction between the tyres and the ground is mu .
![Couvercle de conduit télescopique fermé - Diamètre : 400 mm - 3 tonnes - Couvercle de canal KG A15 - 30 kN PP : Amazon.fr: Bricolage Couvercle de conduit télescopique fermé - Diamètre : 400 mm - 3 tonnes - Couvercle de canal KG A15 - 30 kN PP : Amazon.fr: Bricolage](https://m.media-amazon.com/images/I/71+qgDjANdL._AC_UF1000,1000_QL80_.jpg)
Couvercle de conduit télescopique fermé - Diamètre : 400 mm - 3 tonnes - Couvercle de canal KG A15 - 30 kN PP : Amazon.fr: Bricolage
![Bonjour je suis en 3e et je galère pour cet exercice . La masse d'une voiture est de 1,2 Tonne. Quel est - Nosdevoirs.fr Bonjour je suis en 3e et je galère pour cet exercice . La masse d'une voiture est de 1,2 Tonne. Quel est - Nosdevoirs.fr](https://fr-static.z-dn.net/files/d6d/b8868ee3498f4d8a96f69a232c2639dd.png)