Just use the basic definition of work. In the simplest case, the equation is:
work = force x distance
This implies that force is constant, and that the force acts in the direction of the movement. If the first assumption is not correct, integrals must be used; if the second assumption is not correct, only the component of the force in the direction of the movement must be considered, i.e., you take the dot product.
No, the friction between two surfaces depends on factors such as the roughness of the surfaces, the force pressing them together, and the materials involved. Different surfaces will have different coefficients of friction which determine how much force is required to overcome the friction between them.
Approximately 90% of the twisting force is required to overcome thread friction when a fastener is torqued to specification. The remaining 10% of the force is used to stretch the fastener and create clamp load.
Inertia is the tendency of an object to resist changes in its motion, while friction is the force that resists motion when two surfaces are in contact. Inertia affects how much friction is needed to overcome the object's resistance to motion. Higher inertia means more friction is required to change the object's motion.
Jim will need to exert at least 25 N of force to overcome both gravity and friction and move the object. This is calculated by adding the force of gravity (15 N) and the force of friction (10 N).
The ratio of resistance force to effort force is a mechanical advantage.
Sufficient to overcome the inertia and friction of the vehicle.
No, the friction between two surfaces depends on factors such as the roughness of the surfaces, the force pressing them together, and the materials involved. Different surfaces will have different coefficients of friction which determine how much force is required to overcome the friction between them.
Approximately 90% of the twisting force is required to overcome thread friction when a fastener is torqued to specification. The remaining 10% of the force is used to stretch the fastener and create clamp load.
Inertia is the tendency of an object to resist changes in its motion, while friction is the force that resists motion when two surfaces are in contact. Inertia affects how much friction is needed to overcome the object's resistance to motion. Higher inertia means more friction is required to change the object's motion.
Here is the equation: W = 1/2 m(v22 - v12) As you can see from this equation, it could vary a lot depending upon how fast you moved it, whether you moved it straight up, straight down, to the side, how much friction there was, if you used wheels to reduce friction, what surface it was on.
initial torque to overcome the friction in generator and then to keep constant speed of stator within the generator. Minimum 50NM
Jim will need to exert at least 25 N of force to overcome both gravity and friction and move the object. This is calculated by adding the force of gravity (15 N) and the force of friction (10 N).
The work done by the movers can be calculated using the work-energy principle. The work done can be found by multiplying the force of friction by the distance the crate was moved. The force of friction is the product of the coefficient of friction and the normal force (weight of the crate). The work done will be equal to the force of friction multiplied by the distance moved.
The ratio of resistance force to effort force is a mechanical advantage.
Sliding friction is the force impeding movement as a result of two surfaces rubbing against one another. Imagine pushing a cardboard box of books across a concrete garage floor. Rolling friction refers to the frictional forces between a rolling tire and the pavement. The tire gets warm and an inflated tire rolls easier. The sliding friction is much more difficult to overcome than rolling friction.
If the bag is sliding across the countertop (i.e., the same surface of the bag is always in contact with the counter), then no. Rolling friction is only relevant when the surface of an object in contact with the surface it moves across always changes.
To calculate the work done, we need to consider the force applied by the girl minus the force of friction. The net force is 300N - 200N = 100N. Work done = force x distance. Therefore, the work done is 100N x 750m = 75,000 joules.