Select which of the following statements are True or False. Assume Newtonian Mechanics.
1.The work required to lift a mass one meter depends on the speed at which it is raised..
2.The acceleration of an object is same in all inertial reference frames.
3.The work done by a constant force acting on an object is equal to the magnitude of the force times the distance the object moves.
4.A particle's kinetic energy can change without having any net work done it.
5.Less power is required while slowly lifting a box than while lifting it up quickly.
6.A simple machine cannot reduce the work required to do a task.
actually it's
1 false
2 true
3 false
4 false
5 true
6 true
its still wrong, i don't understand
thanks courtney =]
Pogi pang ambag
To determine which of the statements are true or false, we can analyze each statement based on the principles of Newtonian Mechanics:
1. The work required to lift a mass one meter depends on the speed at which it is raised.
False: The work required to lift a mass one meter does not depend on the speed at which it is raised. Work is calculated by multiplying the force applied in the direction of motion by the distance covered. The speed at which the mass is raised does not affect the amount of work done.
2. The acceleration of an object is the same in all inertial reference frames.
True: According to the principle of relativity, the acceleration of an object is the same in all inertial reference frames. This means that regardless of the frame of reference used to observe the object's motion, the acceleration will remain constant.
3. The work done by a constant force acting on an object is equal to the magnitude of the force times the distance the object moves.
True: This statement is known as the work-energy theorem. The work done by a constant force acting on an object is equal to the product of the magnitude of the force and the distance through which the object moves in the direction of the force.
4. A particle's kinetic energy can change without having any net work done on it.
False: According to the work-energy theorem, the change in kinetic energy of an object is equal to the net work done on it. If there is no net work done, the particle's kinetic energy will remain constant.
5. Less power is required while slowly lifting a box than while lifting it up quickly.
False: The power required to lift a box is the rate at which work is done, which can be calculated by dividing the work done by the time taken. While the amount of work done in lifting the box is the same regardless of the speed, the power required is greater when lifting the box up quickly since the same amount of work is being done in a shorter time interval.
6. A simple machine cannot reduce the work required to do a task.
False: A simple machine, such as a lever or a pulley, can indeed reduce the amount of work required to do a task. By utilizing mechanical advantage, simple machines can allow for a smaller input force to achieve a larger output force, thus reducing the work required.
1. false
2. true
3. true
4. false
5. true. Less power but the same energy
6. true. Machines can reduce force but not work required.
Which do you claim is wrong? What don't you understand?
1 false
2 false
3 false
4 false
5 true
6 true
that should be right its capa.
=]