(1)用弹簧测力计测甲物体重,如图a所示,甲物体重是
(2)估测乙物体重约10N,请你利用下列器材帮他设计一个测量乙物体重的实验方案.
器材:乙物体,弹簧测力计(0-5N).已调平衡的杠杆,刻度尺和细线.
述主要测量步骤或在图b中画出测量方案的示意图
(提示:作图时,弹簧测力计对杠杆的拉力F 1 用力的示意图表示,可不画出弹簧测力计实物图.
②乙物体重力的计算表达式:G=
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2