We need to apply a large force to overcome an object's inertia when we try to ___. A. lift the object B. push the object C. pull the object D. all of the above 相关知识点: 试题来源: 解析 D。解析:当我们试图举起、推动或拉动一个重物时,我们需要施加一个较大的力来克服物体的惯性...
Resultant forces represent the sum of all the vector forces being applied to an object. If the sum of all the forces being applied to an object are equal but in opposite directions, then the resultant force will be zero and the object does not move. However, when a number of forces are...
Therefore, the finite element method can provide a useful tool for studying the breakout phenomenon, and has a potentially broad realm of application that allows one to evaluate the effect of various factors on the magnitude of the breakout force required to free an embedded object. 展开 ...
Manybonesinthebodyactaslevers,which enablearelativelysmallforcetoliftagreaterobject. 身体里的很多骨头都像杠杆一样工作,能用一个相对较小的力量举起更大的物体。 www.transcn.org 6. Withtheirassistance,hecollectedasmallforceanddecidedto make Toungoo his headquarters wherehehoped togathertheloyalBama. ...
The digits first decelerated, and then they gradually built up the grip- and lift forces to move the cube upwards. We found no direct relationship between the control of the reaching movement towards the object and the force applied at the surface of the object to pick it up. We conclude...
Overall, three distinct visual sources may provide information on the applied force of an observed lifting action, namely, (i) the perceived kinematics, (ii) the hand contraction state and finally (iii) intrinsic object properties. The principal aim of the present study was to disentangle these ...
resistance- any mechanical force that tends to retard or oppose motion sonic barrier,sound barrier- the increase in aerodynamic drag as an airplane approaches the speed of sound windage- the retarding force of air friction on a moving object ...
In the diagram below there is a hoisting system set up to lift a 1000 lb. unit up a radio tower. This unit is used for painting towers and is lifted using a capstan hoist. As the unit is lifted, it will be tagged with a 6ft. (adjustable) tag line with a pulley that travels up...
As cells and particles flow in a microfluidic channel, in addition to being moved forward by the mainstream driving force, they are also influenced by the shear effect lift force (Fls) caused by fluid velocity difference and the wall induced lift force (Fws) caused by channel walls in the ...
How much force is needed to lift an object 7 meters if it takes 300 joules of energy to get it there? What is the magnitude of the force between a 550 kg mass and a 200 kg mass, spaced 4 m apart? How does pressure relate to force?