## woleraymond 3 years ago A body hangs from a spring balance supported from the roof of an elevator. if the elevator has an upward acceleration of 3m/s^2 and the balance reads 50N.What is the true weight of the body...

1. Brent0423

Using newtons seconds law F=m*a you should be able to solve this

2. Brent0423

Note: Weight=Force

3. Brent0423

W=M*G is the same as F=M*A

4. woleraymond

U mean Mass is 50/3? @Brent0423

5. woleraymond

@experimentX ANY IDEAS?

6. experimentX

f = m(a + g)

7. woleraymond

PLS ANY EXPLAINATION WHY IS DAT BECAUSE @experimentX THE ANS U SUGGEST IS NOT IN OPTIONS

8. woleraymond

THE OPTIONS ARE 50, 28.3, 38.3 AND 39.8

9. experimentX

50 = m(3 + 9.8) find the mass m true weight is m x 9.8

10. experimentX

or 50/12.8 x 9.8 = 38.2813

11. woleraymond

SO ANS IS 38.3

12. experimentX

yup

13. woleraymond

THANKS @experimentX PLS EXPLAIN WHY WE HAVE TO ADD (A + G)

14. experimentX

|dw:1341336173032:dw| this will increase relative acceleration which will force

15. experimentX

*which will increase force.

16. woleraymond

HMN...U ARE A GENIUS

17. experimentX

No ... not really, just old fool.

18. woleraymond

LOL