Walmart pretty much closes out any retail businesses in an area because it sells pretty much everything . So ? They don ' t force you to shop there . Stick with Mom Pop if you like them better . Or maybe Mom Pop can specialize and sell hard to find items that WalMart doesn ' t . My area has several successful grocers that cater to more discriminating clients . If a best buy opens up the pharmacy and grocery store won ' t close down . Right , but what does Best Buy do to Mom Pop electronics retailers ? <| sep |> Someone has been doing squats <| sep |> ASL TWR of a rocket on the launchpad is usually within 1 . 151 . 5 . The second stage usually has about 0 . 91 starting TWR and does most of the work getting to orbit . Rocket ' s structure and payload are rated to a certain overload depends , can be 5 g , can be more . Exceeding that during the end of the burn can damage the payload or the rocket , so you need to balance TWR . Softer structure usually weighs less and therefore increases overall efficiency of a rocket . That ' s why you can ' t launch 5 tons on a rocket that ' s built for launching 20 tons , instead you have several classes of rockets .