力是束缚矢量是因为力需要考虑作用点，而自由向量是不需要考虑起点的！
A force is a vector quantity which means it has both magnitude and direction. When objects interact with one another, it is likely to cause a push or pull resulting in the Force. For example, when you try to push a ball, it causes a force on the ball that changes its state of ...
1 Which is a vector quantity?(1) electric charge(2) electric field strength(3) electric potential difference(4) electric resistance5 A machine launches a tennis ball at an angle of25° above the horizontal at a speed of 14 metersper second.The ball returns to level ground.Which combination...
Force is everywhere and it comes in a variety of sizes, directions, and type. We can define Force as the push or pull of an object. Learn Force definition, unit & types of Force with solved examples.
(9.6). If the problem is of two dimensions, namely, all the forces lie in the Oxy plane, only the first two columns of F and R need to be specified. resultant (F) only computes the resultant force. [F_sum, M_sum] = resultant (F, R) returns the resultant force in a vector F...
(14.9) is not the actual value of the total contact force at the end of the first time interval. This is because the energy absorbed by various mechanisms is not considered in this expression. Therefore, an iterative approach is used to determine the total contact force and velocity of the...
A force of 36pounds acting in the direction given by the vector is required to pull a weight across a floor. What is the work done if the weight is pulled 10feet from to ? [Round the answer to thenearest tenth.] 相关知识点: 试题来源: 解析 185.2ft‑lbs 185.2ft‑lbs 反馈...
Principal vector can not be defined as a force主矢不能定义为力研究所研究题目集中力量可能性共同工作科学苏维埃退行物理解决苏维埃科学在苏联的共产主义建设中起着重要的作用。我国向共产主义前进的速度在相当大的程度上取决於科学的成就,因为科学不仅能够帮助我们解决当前国民经济中的问题,而且能够以其理论研究为我们...
London developed the perturbation V in a Taylor series in 1/R, where R is the distance between the nuclear centers of a mass of monomers. This Taylor expansion is known as the multipole expansion of V, because the terms in this series can be regarded as energies of two interacting multipol...
The real area of contact could be much larger than that is from the deformation due to applied load, this is because of the work of adhesion. Assuming that the attack angle or the slope of the asperity is θ, the modification of Eq. [3.64] with adhesion work can be derived by letting...