动力F/N | 6.0 | 4.0 | 3.0 | 2.0 | 1.5 |
动力臂L/cm | 5 | 7.5 | 10 | 15 | 20 |
(1)如图甲所示,为了使杠杆在水平位置平衡,可以向
(2)如图乙所示,为了使杠杆平衡,应在P点挂
(3)在图乙中,保持杠杆左边所挂钩码的位置和个数不变,用弹簧测力计分别在杠杆右边的不同位置竖直向下拉杠杆,使之平衡,得到下表中的几组数据,请在图丙中绘出F-L图象
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