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如图所示,弹簧测力计和细线的重力及一切摩擦不计,物重G=1N,弹簧测力计中弹簧的劲度系数k=100N/m,则弹簧测力计的示数和形变量分别为()A.0N,0.01mB.1N,0.01mC.2N,0.02mD.1N

题目详情

如图所示,弹簧测力计和细线的重力及一切摩擦不计,物重G=1N,弹簧测力计中弹簧的劲度系数k=100N/m,则弹簧测力计的示数和形变量分别为(  )
作业帮

A. 0N,0.01m

B. 1 N,0.01m

C. 2 N,0.02m

D. 1 N,0.02m

▼优质解答
答案和解析
弹簧测力计的示数为一端的拉力,故为1N,根据胡克定律,有:
x=
F
x
=
1
100
=0.01N/m
故选:B