A.若图丙中木板做加速运动,则弹簧测力计读数一定不等于木块受到的摩擦力大小 |
B.利用甲、乙两图,可以探究滑动摩擦力大小跟接触面粗糙程度是否有关 |
C.图甲与图丙相比,甲中弹簧测力计指针位置更稳定,读数更准确 |
D.利用甲、乙两图,可以探究滑动摩擦力大小跟压力大小是否有关 |
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