This implies that you can pick the point about which to sum the torques to simplify the calculation. often it is best to pick the point where an unknown force acts, so that the torque due to that force is zero. in this problem the simplest equations result if you take torques about

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?

The necleus of an atom is made up of what subatomic particles?

Ahanging spring stretches by 35.0 cm when an object of mass 450 g is hung on it at rest. in this situation, we define its position as x = 0. the object is pulled down an additional 18.0 cm and released from rest to oscillate without friction. what is its position x at a moment 84.4 s later? express your answer in cm.