University:
Winston-Salem Forsyth County Schools
Course:
AP Physics C: Elec & Mag
Academic year:

2014
Views:

180

Pages:

3
Author:

Ansley Orozco

38o Total tension in the Y-direction is 203 N so each cable has a y-component of 101.5 N. 1b. The actual apparatus has a pulley in the middle of the rope. The cable parallels one side of the rope, goes over the pulley and down to the lava pool. The reason for this is that simply tightening the rope can’t lift the lava sample out. Here's why: calculate how much tension would be needed in… Rework problem same as in 1a, but change angle from 38 to 5. Total tension in the Y-direction is 1434 N so each cable has a y-component of 717N. 2. A man pulls a 50 kg box at constant speed across the floor. He applies a 200 N force at an angle… 30o 2a. sum of forces in y-direction = Fn + Fg + Fappy = 0 2b. Fn = 390 N 2c. sum of forces in x-direction = Ff + Fappx = 0 2d. Ff = 173 N 3. weight of tram = Fg = 8038 N 4. a. sum of forces in x-direction = Ff + Fgx = 0 4. b. sum of forces in y-direction = Fn + Fgy = 0 4. c. use 4b.equation to solve; Fn = 3749 N 4 force diagram: 5. weight of car = 9310 N sum of forces in y-direction = Fn + Fgy = 0; solve for Fn = 8632 N sum of forces in x-direction = Fapp + Ff + Fgx = 0; solve for Fapp = 4688 N force diagram for car: