A pendulum of length is released from rest after being pulled aside so that the…

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A pendulum of length

1.0\,\text{m}

is released from rest after being pulled aside so that the string makes an angle of

30^{\circ}

with the vertical. Neglecting air resistance, find the speed of the

0.20\,\text{kg}

bob as it passes through the lowest point. (a)

3.2\,\text{m}\,\text{s}^{-1}

(b)

1.1\,\text{m}\,\text{s}^{-1}

(c)

1.6\,\text{m}\,\text{s}^{-1}

(d)

2.3\,\text{m}\,\text{s}^{-1}