所受拉力 | 5N | 6N | 8N | 10N | … |
弹簧伸长 | 2cm | 2.4cm | 3.2cm | 4cm | … |
(1)在弹性限度内,弹簧的伸长与它所受的拉力成正比例关系吗?你是依据什么作出判断的?
(2)小刚又做了一次实验来验证这一规律,结果弹簧伸长了6厘米,那么弹簧所受的拉力是多少牛顿?(用比例解决)
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