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如图，一物块放在粗糙的水平地面上，在斜向上的拉力F的作用下向右做匀速直线运动，以下说法正确的是（ ）
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如图所示质量为10kg的金属块放在水平地面上在大小为100N方向与水平成37°角斜向上的拉力作用下由
如图一物体在粗糙水平地面上受斜向上的恒定拉力F.作用而做匀速直线运动则下列说法正确的是
物体可能不受弹力作用
物体可能受三个力作用
物体可能不受摩擦力作用
物体一定受四个力作用
质量为9.8kg的木块放在水平地面上在大小为30N方向与水平面成37°角斜向上拉力作用下恰好沿水平地
如图一物体在粗糙水平地面上受斜向上的恒定拉力F.作用而做匀速直线运动则下列说法正确的是
物体可能不受弹力作用
物体可能受三个力作用
物体可能不受摩擦力作用
物体一定受四个力作用
物体放在粗糙的水平地面上物体重50N受到斜向上方向与水平面成30°角的力F作用F=50N物体仍然静止
如图一物体在粗糙水平地面上受斜向上的恒定拉力F.作用而做匀速直线运动则下列说法正确的是
物体可能不受弹力作用
物体可能受三个力作用
物体可能不受摩擦力作用
物体一定受四个力作用
质量为9.8kg的木块放在水平地面上在大小为30N方向与水平面成37°斜向上拉力作用下恰好沿水平地面
如图粗糙的水平地面上有一倾角为θ的斜劈斜劈上表面光滑质量为m的物块在沿斜面向上的恒力F.作用下以速度
斜劈受到4个力作用处于平衡状态
斜劈受到地面的摩擦力等于零
斜劈受到地面的摩擦力方向向左
地面对斜劈的支持力等于斜劈与物块的重力之和
如图所示水平地面上的物块在斜向上的拉力F.的作用下向右作匀速直线运动则下列说法正确的是
物块一定受到四个力的作用
物体可能受到三个力的作用
物体受到的滑动摩擦力的大小为
水平地面对物块的支持力的大小为
如图所示质量为M.的金属块放在水平地面上在与水平方向成θ角斜向上大小为F.的拉力作用下以速度v向右做
如图放在粗糙水平地面上的木块在斜向上方的拉力F作用下沿地面向右运动则木块受力个数可能是
2个
3个
4个
5个
如图12所示水平地面上有一质量m=4.6kg的金属块其与水平地面间的动摩擦因数μ=0.20在与水平方
如图一物体在粗糙水平地面上受斜向上的恒定拉力F.作用而做匀速直线运动则下列说法正确的是
物体可能不受弹力作用
物体可能受三个力作用
物体可能不受摩擦力作用
物体一定受四个力作用
如图所示质量为m=1lkg的物块放在水平地面上在与水平方向成θ=37°角斜向上大小为50N.的拉力F
如图一物块放在粗糙的水平地面上在斜向上的拉力F的作用下向右做匀速直线运动．以下说法正确的是
物块一共受到3个力的作用
物块受到的拉力F与地面对它的滑动摩擦力是一对平衡力
物块受力平衡
在竖直方向上，物体受到的重力和地面对它的支持力是一对平衡力
如图一物体放在粗糙的水平地面上在斜向上的拉力F.的作用下向右做匀速直线运动以下说法正确的是
在水平方向上.物体受到地面的摩擦力和拉力F.沿水平方向的分力
在水平方向物体受到的拉力F.与地面的摩擦力是一对平衡力
在竖直方向上.物体只受到地面的支持力和拉力F.沿竖直方向的分力
在竖直方间上，物体受到的重力与地面的支持力是一对平衡力
放在水平地面上的物块受到一个与水平方向成θ角斜向下方的力F.的作用物块在水平地面上始终静止如图所示如
N.变小，f变大
N.变大，f变小
N.变小，f变小
N.变大，f变大
如图一物体在粗糙水平地面上受斜向上的恒定拉力F.作用而做匀速直线运动则下列说法正确的是
物体可能不受弹力作用
物体可能受三个力作用
物体可能不受摩擦力作用
物体一定受四个力作用
如图粗糙的水平地面上有一斜劈斜劈上一物块正在沿斜面匀加速下滑斜劈保持静止则地面对斜劈的摩擦力
等于零
不为零，方向向右
不为零，方向向左
以上答案都有可能
如图一物体放在粗糙的水平地面上在斜向上的拉力F.的作用下向右做匀速直线运动以下说法正确的是
在水平方向上.物体受到地面的摩擦力和拉力F.沿水平方向的分力
在水平方向物体受到的拉力F.与地面的摩擦力是一对平衡力
在竖直方向上.物体只受到地面的支持力和拉力F.沿竖直方向的分力
在竖直方间上，物体受到的重力与地面的支持力是一对平衡力
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水平地面对物块的支持力的大小为
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