[填空题]
A force of 10.0 ± 0.2 N is applied to a mass of 2.0 ± 0.01 8 jv(;j8fsu2 ir59lv5)hs v8ta eaw shkg, c)(ez pd2v6,nyft z+wi9d7bsz 1mf;lg ausing it to accelerate. What is the v9egt 2 +z;yfm snwz6bz(pidd1f7 )l,percentage uncertainty of its 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 usindj.k 3wze b,h(g the formula: $$ a=\frac{F}{m} $$ 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