[填空题]
A force of 10.0 ± 0.2 )6j yu2 u+wyekN is appligllv .a4:d9,q8-cs lsyl 8ckwed to a mass of 2.0 ± 0.01 kg, causing it to accelerate. What is the percentage un :y8 als ,g4lcdk.v8s9- lwcqlcertainty 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 using the formux c 43ms-whcci. ;(oogla: $$ a=\frac{F}{m} $$ 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