Can someone help me with an 8th grade science problem...?
the question is:
a balloon with the mass of 0.020 kg is charged by rubbing and then is stuck to the ceiling. if the acceleration of gravity is 9.8 m/s squared*, what is the electrical force on the balloon?
*i meant it to be 9.8 m/s to the second power.im stil confused with squared and cubed...yea..so can you help me out with this?
it`s due 2maro.
yuck...homework sux...
thanx in advanced to those of you who do help me out.
*.♥.*.♥.*.♥.*
2007-01-09 16:45:53 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Boy am I glad I'm not in school anymore! I'd be flunking for sure! Good luck!
2007-01-09 16:53:31 · answer #1 · answered by Sulkahlee 3 · 0⤊ 0⤋
Take heart, it's really a very simple problem, so pay attention here:
As the ballon is suspended from the ceiling, there is a force acting on it downwards (gravitational force). The value of this force is determined by the product of the mass of the ballon and the acceleration due to gravity. To keep the balloon in equilibrium, it is balanced by the force of the electrical charge, which is therefore equal to the force of gravity on the balloon.
From all of above, therefore, force F = m*g
= 0.02 kg * 9.8 m/s^2
= 0.196 Newton
NOTE: Force in the MKS system of units is measured in NEWTONS and results from a product of mass in Kg and acceleration in meters/sec^2
Good luck
2007-01-10 09:31:44 · answer #2 · answered by Paleologus 3 · 0⤊ 0⤋
ok i finally got it. the formula is force=mass x acceleration. and the answer is .02x9.8^2= 1.6928
2007-01-10 01:15:17 · answer #3 · answered by misstress n 3 · 0⤊ 0⤋