Ive subtituted all the values given in the formula. From then, i couldn't figure out the next stepCWatters said:Please post your attempt at a solution.
So can i substitute F on the second equation with the value of N given in the question. It says that it is an opposing force. So i have to do F-N = m(v-u)/t. Right? Then i will have 2 unknowns F and V. What now?CWatters said:It's best NOT to substitute values at the outset. The problem asks for the final velocity. Try rearranging the second equation to give an equation for the final velocity. Show your working.
CWatters is saying (and I agree) that you should consider the tug's arresting pull as the only horizontal force on the barge. Of course, in reality, there would be drag from the water, but that would be very small in comparison.afifbaha said:Ya that's what i was figuring out. Anybody else could help?
The different types of forces include applied force, gravity, friction, normal force, tension, and spring force. Applied force is the force applied to an object by another object. Gravity is the force exerted by the Earth on objects. Friction is the force that resists motion between two surfaces. Normal force is the support force exerted by a surface on an object. Tension is the force in a string or rope when pulled. Spring force is the force exerted by a compressed or stretched spring.
The net force on an object is the sum of all the forces acting on that object. If the forces are acting in the same direction, you can simply add them together. If the forces are acting in opposite directions, you subtract the smaller force from the larger one. The net force is measured in Newtons (N).
Newton's First Law of Motion, also known as the Law of Inertia, states that an object will remain at rest or in motion at a constant velocity unless acted upon by an external force. This means that objects tend to resist changes in their motion, whether it is starting, stopping, or changing direction.
The mass of an object is a measure of its inertia, or resistance to changes in motion. The greater the mass of an object, the more force it will require to change its motion. This means that objects with greater mass will accelerate slower than objects with less mass when acted upon by the same force.
Friction is a force that opposes motion between two surfaces in contact. It acts in the opposite direction of the intended motion and can slow down or stop an object's motion. The amount of friction depends on the nature of the surfaces and the force pressing them together. In some cases, friction can be beneficial, such as when it allows us to walk or drive without slipping. In other cases, it can be a hindrance, such as when it causes parts of a machine to wear down.