The potential energy change is equal to the mechanical work made against the plate weight, therefore the efficiency of the energy transformation is∵ 相关知识点: 试题来源: 解析 0.6 Computation of the change in potential energy0.2+0.2 Correct results for efficiency ...
What is gravitational potential energy? See the gravitational potential energy formula, the kinetic energy formula, and gravitational potential...
A spring when stretched by 2 mm its potential energy becomes 4 J. If it is stretched by 10 mm, its potential energy is equal to View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11...
The general expression for gravitational potential energy arises from the law of gravity and is equal to the work done against gravity to bring a mass to a given point in space.Because of the inverse square nature of the gravity force,the force approaches zero for large distances,and it ...
How is gravitational potential calculated? Since the force required to lift it is equal to its weight, it follows that the gravitational potential energy is equal to its weight times the height to which it is lifted. PE = kg x 9.8 m/s2x m = joules.PE = lbs x ft = ft lb. ...
According to the work energy theorem, the work done by the net force on a particle is equal to the change in its Akinetic energy Bpotential energy Clinear momentum Dangular momentumSubmit A : The change in kinetic energy of a particle is equal to the work done on it by the net force...
from Chapter 8 / Lesson 8 101K Understand what the law of conservation of mechanical energy is and how mechanical energy can change forms. Learn what the law of conservation of mechanical energy formula is and how to use it to calculate examples of mechanical energy conservation. Rela...
Work is needed to give a system potential energy. It takes effort to lift a ball off the ground, stretch a rubber band, or force two magnets together. In fact, theamount of potential energy a system possesses is equal to the work done on the system. Potential energy also can be transfo...
True or False?Work-Energy Principle:When work is done by many forces acting on a body, the kinetic energy of the object changes. The total work done by all the forces appears as change in kinetic energy of the object, which is the statement o...
The Work–Kinetic Energy Theorem One can show that as a particle moves from point ri to rf, the change in kinetic energy of the object is equal to the net work done on it: ∆K = Kf − Ki = Wnet (6.13) 6.1.5 Power In certain applications we are interested in the rate at whi...