Free fall speed From the definition of velocity, we can find the velocity of a falling object is v = v₀ gt where v₀ is the initial velocity (measured in m/s or ft/s);;W = mg (1) The downward force, W, must be balanced by the upward restoring force of the spring when the system is at rest F = W = mg (2) According to Hooke's law the restoring force of the spring is directly proportional to the elongation within the elastic limit (the maximum a spring• Weight a force vector (magnitude w = mg) which is in the direction of gravitational acceleration (g – down, toward the center of the Earth) • Net Force the resultant vector that is the sum of all forces being applied to an object • Equilibrant Force one that is equal in magnitude and opposite in direction to the Net Force
Sci 1010 Chapter 3
W mg example