RM stands for repetition maximum. For example, a 1RM for the squat would consist of the maximum amount of weight that one could squat for 1 rep (repetition). A 5RM squat would be the maximum amount of weight one could squat for 5 reps.
Body weight squat, goblet squat, zombie squat, front squat, and back squat
barry sanders is worth about maybe $27 million
you should at least be able to bench body weight, and squat 1.5x body weight. Competitive players bench 2x body weight, and squat 3.5x. -EXSS major
To learn the correct way of doing a hack squat one would have to do research on weight lifting. This could be done at the local gym or even the local library. The library would have books on the hack squat.
Benching: You should be able to bench your own body weight. Good is 125% of your weight, great is 150% and amazing is 175%. Squat: You should squat about double your weight if your on the lighter side and at least double if you are bigger. Unless you are a trained weight lifter use a conversion chart to predict one rep max, bad form could leave you crippled.
weight training
use less weight or do less reps/sets
Could be that your rear struts are bad and are allowing the car to squat enough when weight is added for the tires to rub the body or frame
200
Most people shoot for anything from 1-3 to determine a max weight.
add that weight to what you do now