Centripetal and centrifugal forces are two terms used to describe the physics of circular motion — but only one of them is real. The centripetal force keeps an object moving in a circle and is always pointed toward the center of that circle. For instance, the gravitational force of the sun...
A. Centripetal force. B. Centrifugal force. C. Contact force. D. Non-contact force. 相关知识点: 试题来源: 解析 C。原因:推箱子是接触力,A 选项向心力是使物体做圆周运动的力;B 选项离心力是虚拟力;D 选项非接触力如重力、磁力等。涉及的物理知识是力的分类,英语阅读技巧是理解“push a box”这个...
A force that is directed towards the center of a circle that keeps an object moving in that circle is called a centripetal force. Learn more about it's definition, issues, Newton's first law, examples and equations. Related to this QuestionWhat provides the centripetal force when a car driv...
求向心力的公式就是向心力(centripetal force)没错,答得好再加悬赏分 真正问题是:what forces act on you were you at the centre of the earth? 相关知识点: 试题来源: 解析 向心力是没有公式的!有公式就是骗人的!为什么呢?因为向心力的定义就是: 作圆周运动的物体,它运动的时候的合力指向圆心,这个合...
As the moon orbits, it is under a force resulting from the gravity of the Earth. Centripetal acceleration is a vector, which means it has both a magnitude and a direction. The direction always points inward to the circle's center, because this is the direction in which a rotating object ...
A 1,160 kg car travelling at 30 m s^{-1} is taking a curve of radius 64 m. a) What centripetal force is needed to keep the vehicle on the curve? b) Give the centripetal acceleration of the car as a multiple of g. Does the radius change the centripeta...
A spacecraft at a Lagrange point feels a balance between the gravitational pull of two large bodies — such as Earth and the sun, or Earth and the moon — on a smaller object, and the centripetal force needed for that smaller object to move in time with them and thus appear to remain...
就是向心力(centripetal force)没错,答得好再加悬赏分 真正问题是:what forces act on you were you at the centre of the earth? 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 向心力是没有公式的!有公式就是骗人的!为什么呢?因为向心力的定义就是: 作圆周运动的物体,它运动的...
Due to this, the inner wheels of the vehicle lose some of the force of traction. As the speed of vehicle increases, so is the severity of these forces. This situation generates an imbalance in the overall behaviour of the vehicle. As a result, it increases the possibility of a vehicle ...
the centripetal force to keep the object moving in a circle. A practical example of this is seen when taking a sharp curve with an automobile. Here, friction is the only force keeping the vehicle's tires on the road. Increasing speed greatly increases force, so a skid becomes more likely...