[填空题]
A force of 10.0 ± 0.2 N is applied to a mass of a(pn )t:3cm9jgt5tpy nz+5oy2.0 ± 0.01 kg,t)ngm7 ov36od causing it to accelerate. What is the percentage uncertainty of godnm7)3tv6 oits acceleration? % (do not include the percent sign in your result)
参考答案: 2.50
本题详细解析: The acceleration is calculated using the forit+5d2z(e;(qkw itj2 2cnxp fmula: $$ a=\frac{F}{m} $$ so the percentage uncertainty on the acceleration is the sum of the percentage error on the force and on the mass. The percentage uncertainty on the force is: $$ \frac{0.2}{10.0} \times 100 \%=2 \% $$ The percentage uncertainty on the mass is:
$$ \frac{0.1}{2.0} \times 100 \%=5 \% . $$ Hence the percentage error on the acceleration will be $7 \%$.
Post time 2024-8-21 21:38:19