PROCEDURE

Setup

a$)$ Setup several pulleys on the frame struts, force board approximately in the middle of

frame strut and secure with knobs. Ensure that there is enough space to hang a load

underneath each pulley.

b$)$ Attach a blank paper sheet on the force board and make sure that it is properly

secured and flat against the board.

c$)$ Hang the string provided over pulleys and load mass hanger to each open end.

d$)$ Slowly add weights to the various load hooks until the connected ends are roughly

positioned over the centre of the board.

MEASUREMENTS

a$)$ Using a pencil, trace each string line on the direction of the string. Remember to

mark each trace mark line with identification and total weight applied to the string.

b$)$ A free body diagram can be sketched to $$visualize$$ and identify all the forces and

moments acting on a body. Their relative magnitude and direction can be indicated.

c$)$ Remove the paper from the board and sketch free body diagram joining all the lines

and use protector to measure the angles of forces applied in different directions.

Calculations $($Do the following calculations for case $1$ and $2$ using the sketches in the picture$)$:Case $2$

a$)$ For both rings, extend the trace lines of one ring to intersect at the common midpoint

for that ring, as well as the connecting cord. Specify two sets of perpendicular

coordinate axis of which the origins lie on the midpoint of each ring.

b$)$ By using the angles measured of each trace and using the weight values, calculate the

components of each trace along the specified coordinate axis.

c$)$ For both rings, calculate the resultant force that the connecting cord applies to each ring

by summing the components of the traces along their respective coordinate axis.

d$)$ Calculate the resultant forces and discuss any discrepancies.