In part 3.2.2 of the experiment, a pair of students measure θmirror = 19.5 degrees. to find θbench, they use the theoretical relationship θmirror = 1/2 θbench. then they measure θbench = 46.5 degrees. what is the discrepancy between theory and experiment for θbench?

discrepancy between theory and experiment 19.23 %

Explanation:

given data

Experimental theta (E) = 46.5 degrees

and

Theoretical theta (T) = 2 × 19.5 = 39 degree

so we can say % discrepancy will be

% discrepancy =       .....................1

so

% discrepancy =  

% discrepancy =

% discrepancy = 19.23 %

so discrepancy between theory and experiment 19.23 %

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

the ima (higher than 1m) will be greater than the ima with the height of 1m.