A $2\, ext{kg}$ block is accelerated downward at $2\, ext{m s}^{-2}$…

Question

A $2\,	ext{kg}$ block is accelerated downward at $2\,	ext{m s}^{-2}$. Taking $g = 10\,	ext{m s}^{-2}$, what is the tension in the string?

Accepted Answer

A. $16\,	ext{N}$

For downward acceleration, $mg - T = ma$. So $T = m(g-a) = 2(10-2) = 16\,	ext{N}$. Therefore option A is correct.

Answer

$20\,	ext{N}$

Answer

$24\,	ext{N}$

Answer

$40\,	ext{N}$

A $2\,\text{kg}$ block is accelerated downward at $2\,\text{m s}^{-2}$. Taking $g = 10\,\text{m s}^{-2}$, what is the tension in the string?