(a)[2]
Length, mass and temperature are all SI base quantities. State two other SI base quantities.
(b)
The acceleration of free fall $g$ can be found from an oscillating pendulum using the equation $g = \frac{4\pi^2 l}{T^2}$, where $l$ represents the pendulum length and $T$ is the period of oscillation. In an experiment, the measured values for an oscillating pendulum are $l = 1.50\,\text{m} \pm 2\%$ and $T = 2.48\,\text{s} \pm 3\%$.
(b(i))[1]
Calculate the value of the acceleration of free fall $g$.
(b(ii))[2]
Determine the percentage uncertainty for $g$.
(b(iii))[1]
Use the answers from (b)(i) and (b)(ii) to work out the absolute uncertainty in the calculated value of $g$.