Physics Vector Lab Help???

Question

http://facstaff.gpc.edu/~jseymour/Physics%201111L-2211L/Lab_02_Force_Table_004.pdf

I need help with my lab.

Answer 1

List the questions and details for which you would like to know the answers.

Comments

 

Questions:

1) State how this experiment has demonstrated the vector addition of forces.

2) If you have four pulleys (four forces acting on a particle), could all four pulleys be placed in the same quadrant or in two adjacent quadrant and still be in equilibrium? Explain.

3) State the condition for the equilibrium of a particle.

4) The forces used in this experiment are the weights of known masses, that is, the forces exerted on these masses by gravity. Bearing this in mind, explain the function of the pulleys?

5) The analytical method of adding vectors expressed in terms of their components maybe applied to vectors in three dimensions, for which graphical work is inconvenient. Find the magnitude of the resultant of the vectors A= 12 i – 37 j + 58 k and B = 5 i + 30 j – 42 k, where i, j and k are unit vectors along the x, y and z axes respectively.

6) The x and y component of a certain force are measured and found to be 68 (+/-3) N and 42 (+/-) N, respectively. Calculate the direction and magnitude of this force, expressing your results to the proper number of significant figures and showing the error in both magnitude and angle. Note that the error in the latter is obtained from the error in its tangent. Devise a procedure for doing this and show your work.