In the English system, the unit of force is the pound and the unit of distance is the foot, so work is given in foot-pounds. In the metric system, kilograms and meters are used. One newton is the force needed to accelerate 1 kilogram of mass at the rate of 1 m/sec2. Thus, the...
When we first learned about work, we were told that the amount of work done on an object is equal to the force on that object over the distance it is displaced. Simplified, we can write this equation as work = force x distance. This sounds pretty good, right? But there's a ...
Both the force field and the equation of the path were parameterized. Work done by the force field is the integral of the force field along the given path Answer and Explanation: Let us parameterize first the curve by lett...
Equation 24 is useful if you know a certain force is applied for a certain time; equation 27 is useful if you know a certain force is applied while the cell moves a certain distance. You might be tempted to take the limit of ultramicroscopic cells (λ→ 0). In theory, this would mak...
Let F be a continuous force field over a domain D. Then the work W performed as an object moves along a smooth curve C in D is given by the integral W=∫CF⋅dR. Answer and Explanation: We are given F=2xyi+j+x2k St...
1. How much work is done by the gravitational force when a Hint: The force and the displacement are both 265-kg object falls 2.80 m? downwards, so the angle between them is 0o .2. A 65.0-kg physics student climbs a flight of stairs 20.0 m high. Hint: The minim...
In order for work to be done on an object, a force must act on the object over a given distance. Push a box across the floor and you've done work on it, but if you push it and it doesn't go anywhere, you've done no work on it all, no matter how exhausted you may be!
The amount of work done upon an object depends upon the amount of force (F) causing the work, the displacement (d) experienced by the object during the work, and the angle (theta) between the force and the displacement vectors. The equation for work is .
Because when a joint is pulled, often many other deformation forces are measured in addition to the interfacial deformation force. Equation [14.1] describes the relationship between the practical adhesion, the work of adhesion, and those additional deformation forces.6 [14.1]Practical adhesion (G) ...
Thus the defining equation for work W is given below, where f and s are the magnitudes of the force and displacement, respectively, and &phgr; is the angle between these two vector quantities (see illustration). Because f cos &phgr; · s = f· s cos &phgr; work may be defined ...