A laboratory pan balance is shown
In general when calculating the mass of the pan neglecting the mass of the rod:
A- is possible if the fulcrum is placed at the center of mass of the whole balance
B- is possible if the center of mass of the rod is the pivot point
C- is not possible
D- is possible if the chemical mass is larger than the mass of the rod
Answer is B but I picked A. If the fulcrum is at the center of mass then isn't the lever arm 0? why are they saying that the lever arm is 0...
Torque
In general when calculating the mass of the pan neglecting the mass of the rod:
A- is possible if the fulcrum is placed at the center of mass of the whole balance
B- is possible if the center of mass of the rod is the pivot point
C- is not possible
D- is possible if the chemical mass is larger than the mass of the rod
Answer is B but I picked A. If the fulcrum is at the center of mass then isn't the lever arm 0? why are they saying that the lever arm is 0...
Torque