Question

A $0.1kg$ yo-yo is initially hanging at rest at the end of its string. Then the tension force in the string is adjusted to $0.6N$ pulling upward.
Which one of the following describes how the yo-yo will move once the string's force is adjusted?

• A. The yo-yo will accelerated upward
• B. The yo-yo will accelerated downward
• C. The yo-yo move upward at a constant velocity
• D. The yo-yo will move downward at a constant velocity

Answer 1

Answer: (B)

The yo-yo will accelerated downward

Given : $m=0.1$ kg $T=0.6$ N (upwards)

Gravitational force on the yo-yo $F_g=0.1\times 10=1$ N (downwards)

As $F_g>T$, thus the yo -yo will accelerates in downward direction.