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A pendulum of length l metres takes t seconds to complete one full oscillation. The formula for T is:
T = 2π √(l/g)
Where g m/s2 is the acceleration due to gravity.
a) Find T if l = 5 and g = 10
b) Rearrange the formula to make l the subject of the formula
c) How long is a pendulum which takes 3 seconds for one oscillation, if g = 10?
2 answers
(a) just plug in your numbers
(b) T = 2π √(l/g)
T / 2π = √(l/g)
(T / 2π)^2 = (l/g)
now finish it off and (c) is a cinch.
(b) T = 2π √(l/g)
T / 2π = √(l/g)
(T / 2π)^2 = (l/g)
now finish it off and (c) is a cinch.