In IMAGE (click on link below for image) we see two blocks connected by a string and tied to a wall. The mass of the lower block is 1.0 kg; the mass of the upper block is 2.0 kg. Given that the angle of the incline is 31 degrees, find the tension in a) the string connecting the two blocks and b) the string that is tied to the wall.
LINK for image: http://img.photobucket.com/albums/v156/PNHTran88/02.jpg
Thanks!
2007-03-14 12:49:23 · 1 answers · asked by 123haha 1 in Science & Mathematics ➔ Physics
Find expressions for the down-slope component of each mass's weight.
By Newton's 2nd, if the masses are in equilibrium (acceleration=0), the net force must be zero. So the tension of the string between the wall and the upper mass must be equal and opposite the sum of the 2 down-slope components (of the 2 weights).
The tension on the string between the 2 masses must be equal and opposite the down-slope component of the lower mass's weight.
2007-03-14 13:49:44 · answer #1 · answered by sojsail 7 · 0⤊ 0⤋