Question

A carpet of length 10 m is spread on horizontal ground. Now if it is folded to double on it self, the shift in the center of mass of the carpet with respect to the original center of mass is

• A. 2.5cm
• B. 5 m
• C. 7.5m
• D. 1.25m

Answer 1

The correct option is A

2.5cm

Centre of mass of the carpet spread on horizontal ground =$\frac{L}{2}$

If it is folded to double on it-self, then centre of mass is at $\frac{L}{4}$
$\therefore Shiftincentreofmass=\frac{L}{2}-\frac{L}{4}=\frac{L}{4}=\frac{10}{4}=2.5m$