At what rate does gravity cause objects to accelerate at sea level on earth
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The total energy (also called mechanical energy) is the sum of the kinetic energy and potential energy:
For this pendulum, we see that at t=0.60 s the total energy is TE=0.918 J while the potential energy is 0.054 J, so the kinetic energy (the missing value in the table) is
For this pendulum, we see that at t=0.60 s the total energy is TE=0.918 J while the potential energy is 0.054 J, so the kinetic energy (the missing value in the table) is
For a curved mirror, the radius of curvature R is twice the focal length f:
(1)
Since the diameter d is twice the radius R, we can rewrite (1) as
From which we can calculate the focal length from the diameter:
Since the diameter d is twice the radius R, we can rewrite (1) as
From which we can calculate the focal length from the diameter: