试题与答案

如图甲所示,质量为m=1kg的物体置于倾角为θ=37°固定斜面上(斜面足够长),

题型:计算题

题目:

如图甲所示,质量为m=1kg的物体置于倾角为θ=37°固定斜面上(斜面足够长),对物体施加平行于斜面向上的恒力F,作用时间t1=1s时撤去拉力,物体运动的部分v-t图象如图乙所示,取g=10m/s2,试求:

(1)恒力F的大小和斜面与物体间的动摩擦因数μ。

(2)t=4s时物体的速度v。

答案:

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