皮带传送物体的上当题析1.如图1所示,传送皮带与水平面的夹角θ=37°,并以v=10m/s的速度运行着.在传送带的A端轻轻地放一小物体,该物体与传送带之间的动摩擦因数为μ=0.5,传送带A端到B端的距离s=16m,求小物体从A端运动到B端所需的时间.(sin37°=0.6,cos37°=0.8,g=10m/s~2)“上当”解法1:设小物体的质量为m,它所受皮带的摩擦力沿皮带面向上,其大小为 The problem of the belt transporting objects is shown in Figure 1. As shown in Figure 1, the angle θ between the conveyor belt and the horizontal plane is 37°, and it is run at v=10m/s. Put a small amount gently on the A end of the conveyor belt. The dynamic friction coefficient between the object, the object and the conveyor belt is μ=0.5, and the distance from the A end to the B end of the conveyor belt is s=16m. The time required for the small object to move from the A end to the B end is obtained. (sin37°=0.6, cos37° = 0.8, g = 10m/s~2) “Dangdang” Solution 1: Let the mass of the small object be m, and the friction force of the belt will be upwards along the belt. Its size is