Question

After a watch has been wound, it

• A. Has great energy stored in it
• B. Possesses mechanical potential energy stored in it
• C. Has electrical energy stored in it
• D. Has no energy in it

Answer 1

The correct option is B Possesses mechanical potential energy stored in it

$\text{Solution}:$

1. A wound up watch spring has potential energy .

2. As the spring unwinds itself, the potential energy changes into the kinetic energy.

3. This kinetic energy does work in moving the arms of the watch.

$\text{Hence B is the correct option}$