Question

Set up the static system shown below. Level the system after adding the 1 kg mass. 2. Record the readings on the two balances. Use .5 N as the ± uncertainty. P = _4.0_ ± _0.5___ N Q = _7.0_ ± 0.5 N 3. Based on the sum of the forces equal zero, (eq-1), P + Q should equal W + Ws . For the ± part of W + Ws , use the ± part of the 10 N scale measurement of W from above. (The ± values just add.) W + Ws = +/- N P + Q = +/- ____ N Do they overlap? If not, why not? 4. Use torque addition to predict force P at the 80 cm mark. Use the location of force Q as the center of rotation for the torque calculations, Equation 2. Show your work.

          Set up the static system shown below. Level the system after
adding the 1 kg mass. 2. Record the readings on the two balances.
Use .5 N as the ± uncertainty. P = ___4.0_____ ± ___0.5_____ N Q =
___7.0_____ ± ____0.5____ N 3. Based on the sum of the forces equal
zero, (eq-1), P + Q should equal W + Ws . For the ± part of W + Ws
, use the ± part of the 10 N scale measurement of W from above.
(The ± values just add.) W + Ws = ________ +/- ________ N P + Q =
________ +/- ________ N Do they overlap? If not, why not? 4. Use
torque addition to predict force P at the 80 cm mark. Use the
location of force Q as the center of rotation for the torque
calculations, Equation 2. Show your work.

Added by David D.

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