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nukeman
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Homework Statement
A weight lifter who has a mass of 90kg lifts a weight of 50kg, which accelerates the weight at a rate of 0.47 m/s^2
Would the total force simply be (140kg)*(0.47m/s^2) = 65.8 n?
nukeman said:Homework Statement
A weight lifter who has a mass of 90kg lifts a weight of 50kg, which accelerates the weight at a rate of 0.47 m/s^2
Would the total force simply be (140kg)*(0.47m/s^2) = 65.8 n?
Homework Equations
The Attempt at a Solution
BobG said:You have the force of gravity on the weightlifter.
You not only have the force of gravity on the weight, but the weightlifter is applying a force to accelerate it.
This would be the total force applied to the floor the weightlifter is standing on.
Total force is the overall force acting on an object, taking into account both magnitude and direction. It is a vector quantity and is measured in Newtons (N).
To find the total force on an object, you need to add up all the individual forces acting on it. If the forces are acting in the same direction, you simply add their magnitudes. If they are acting in opposite directions, you subtract the smaller force from the larger one.
Yes, total force and net force are often used interchangeably. Net force is the sum of all the forces acting on an object, whereas total force is the overall force acting on an object.
Yes, total force can be negative if the forces acting on an object are in opposite directions and have different magnitudes. In this case, the total force is equal to the difference between the two forces, and its direction is determined by the larger force.
Yes, there are various methods for calculating total force, depending on the situation. Some common methods include using vector diagrams, using trigonometry and using equations such as Newton's second law (F=ma) or the law of universal gravitation.