A group of students measures the period of a pendulum for several lengths and plots…

PHYSICS · Single correct · CBSE · Physics · Oscillations · Oscillations

Problem

A group of students measures the period

T

of a pendulum for several lengths

l

and plots

T^2

(vertical axis) versus

l

(horizontal axis). The best-fit line has a slope of

4.05\,\text{s}^2\!/\!\text{m}

. Based on these data, which value best estimates the gravitational field strength at the experiment site? (a)

4.1\,\text{m}\!/\!\text{s}^2

(b)

12.7\,\text{m}\!/\!\text{s}^2

(c)

9.8\,\text{m}\!/\!\text{s}^2

(d)

8.9\,\text{m}\!/\!\text{s}^2