question 13 of 25\na piano has a mass of 99 kg. what is the weight of the piano?\na. 1030 n\nb. 970 n\nc…
question 13 of 25\na piano has a mass of 99 kg. what is the weight of the piano?\na. 1030 n\nb. 970 n\nc. 842 n\nd. 1129 n
Answer
Explanation:
Step1: Recall weight formula
Weight $W = mg$, where $m$ is mass and $g$ is acceleration due to gravity ($g = 9.8\ m/s^{2}$).
Step2: Substitute values
$m = 99\ kg$, $g=9.8\ m/s^{2}$, so $W=99\times9.8$. $W = 970.2\ N\approx970\ N$
Answer:
B. 970 N