146k views
5 votes
The tip of a pendulum moves through an angle of 0.38 rad radians. If the radius of the pendulum is 25 centimeters then which of the following is the length of the arc the tip moves through

1 Answer

3 votes
we know that
circumference=2*pi*r
for r=25 cm
so
circumference=2*pi*25-----> 50*pi cm

if
2*pi radians (full circle) has a length of----------------> 50*pi cm
0.38 radians-------------------> x
x=0.38*50*pi/(2*pi)-----> x=9.5 cm

the answer is
9.5 cm
User Alexey Frunze
by
8.7k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories