Question

A little girl is walking, swinging her arms through a 20° angle every 0.25 s. The length of each arm is 30 cm. Assuming that the arms move with constant speed during each swing, find the force that the blood vessel in her arm would exert on a 1-gram drop of blood from the end of the arm if her arm were not swinging.

Answer 1

Answer:

The force will be "$9.8\times 10^{-3} \ N$".

Explanation:

The given values are:

Mass,

m = 1 gram

Angle,

Ф = 20°

As we know,

⇒ $F=mg$

On substituting the given values in the above expression, we get

⇒     $=(1.0\times 10^{-3})(9.8)$

⇒     $=9.8\times 10^{-3} \ N$