A simple pendulum of length is momentarily displaced along its arc by and released

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A simple pendulum of length

0.80\,\text{m}

is momentarily displaced along its arc by

2.0\,\text{cm}

and released. Find the magnitude of its instantaneous tangential acceleration at that position. (Take

g = 9.8\,\text{m}\,\text{s}^{-2}

.) (a)

0.50\,\text{m}\,\text{s}^{-2}

(b)

4.9\,\text{m}\,\text{s}^{-2}

(c)

0.25\,\text{m}\,\text{s}^{-2}

(d)

1.2\,\text{m}\,\text{s}^{-2}