Constant Force Mass of the cart and (force) sensor =59556 grams = 0.596 kilogram
ID: 1543193 • Letter: C
Question
Constant Force Mass of the cart and (force) sensor =59556 grams = 0.596 kilograms Hanging Mass = 20.01 grams = 0.02011 kilograms Measured Acceleration (Slope) = 0.240 m/s^2 Calculated Acceleration = ___ m/s^2 Measured Force ___ 0.171 N Calculate Force = ____ N % Difference = |Measured Force - Calculated force/Average| times 100 = % Difference = | ____| times 100 = % Difference = ____ Post-lab Questions (a) Does a man weigh more at the North Pole or at the equator? Explain. (b) Does he weight more at the top of Mt. Everest or at the base of the mountain? Explain Does the concept of a contact force apply to both a macroscopic scale and an atomic scale? Explain.Explanation / Answer
Q1.
part a:
weight=mass*acceleration due to gravity
acceleration due to gravity is higher at equator as earth's radius is higher at equator as compared to the poles.
hence a man will weight more at the equator.
part b:
as height from earth's surface increases, acceleration due to gravity decreases.
hence he will weight more at the base of the mountain.
Q2.
contact force applies at a macroscopic scale.
at atomic level, binding energy and electrical energy are more dominant.
and due to finite forces, atoms are not in strictly contact with each other.
hence the concept applies only to macroscopic scale.