A $2\, ext{kg}$ block is pulled upward vertically with acceleration $…

Question

A $2\,	ext{kg}$ block is pulled upward vertically with acceleration $2\,	ext{m s}^{-2}$. Taking $g = 10\,	ext{m s}^{-2}$, what is the tension in the string?

Accepted Answer

C. $24\,	ext{N}$

For upward acceleration, $T - mg = ma$. Hence $T = m(g+a) = 2(10+2) = 24\,	ext{N}$. So option C is correct.

Answer

$16\,	ext{N}$

Answer

$20\,	ext{N}$

Answer

$40\,	ext{N}$

A $2\,\text{kg}$ block is pulled upward vertically with acceleration $2\,\text{m s}^{-2}$. Taking $g = 10\,\text{m s}^{-2}$, what is the tension in the string?