A 6500-kg helicopter accelerates upward at 0.60 m/s? while lifting a 1200-kg car(a) What is the lift force exerted by the air on the rotors?(b) What is the tension in the cable (ignore its mass) that connects the car to the helicopter?
I believe they excelled in math and astrology and mummification in preserving of the dead. I believe they excelled in art and sculpture and mythology. These are just my conclusions over the years in reading articles and looking at museums artifacts. The mythology could of been part of their belief system or faith. There are many arguable conclusions or guesses as to their abilities and gifts back then.
they were much more in tune with the earth.they didnt have all this modern crap thats killing everyones mind,, cell phones ,comps, i pods.we have lost touchwhen was the last time you heard a kid say, lets go catch some frogs.this is why there is so much depression these days. oh by the way, there are drawings of helicopters in the lower levels of the pyramids.something crazy was happening back then the people who built the pyramids wanted to make them , they were not slaves like they thought.
The Egyptians had advanced mathmatics to build pyramids, the Romans had their aquaducts and the Greeks had democracy
a) From Newton's 2nd Law we have F - m*g m*a So F m*(g + a) (6500+1200)kg*(9.8m/s^2 + 0.60m/s^2) 80080N b) From a free body about the car we have T - m*g m*a So T m*(g +a) 1200kg*(9.8m/s^2 + 0.60m/s^2) 12480N
