Conservation of Rotational Kinetic Energy

Concepts of work kinetic energy and potential energy are discussed. Using the equation KE 05mv 2 the velocity can be determined to be 707 ms for B and E and 10 ms for H and K.

Question Video Calculating The Rotational Kinetic Energy Of A Football Nagwa

Work done by variable force.

. F 10kgf 10 10N 100 N S 05m i Work done when. We see rotational motion examples in our daily life. Some of the examples of rotational motion are Rotation of earth about its own axis create the cycle of day and night.

Calculate the work done by the force when the displacement is i in the direction of force ii at an angle of 600 with the force iii normal to the forceg 10 N kg-1. Just as the kinetic energy of an object moving in a straight line is given by this equation. The kinetic energy of a rotating body can be compared to the linear kinetic energy and described in terms of the angular velocity.

The rotational kinetic energy is represented in the following manner for a. E ½mv 2 where m is mass and v is velocity so the equivalent kinetic energy of a spinning object is given by this one. These concepts are combined with the work-energy theorem to provide a convenient means of analyzing an object or system of objects moving between an initial and final state.

The total energy of a system can be subdivided and classified into potential energy kinetic energy or combinations of the two in various ways. The kinetic energy arises due to the motion of its particles like translational energy rotational energy vibrational energy etc. Kinetic energy is determined by the movement of an object or the composite motion of the components of an object and potential energy reflects the potential of an object to have motion and generally is a function of the.

Note that although the strict mathematical description requires a triple integral for many simple shapes the actual number of integrals. Get rotational motion formulas list by following this link. And so the kinetic energy at the bottom of the hill is 100 J G and J.

Motion of wheel gears motors etc is rotational motion. A body when acted upon by a force of 10kgf gets displaced by 05m. The First Law of Thermodynamics ie the law of conservation mass states that energy cannot be created or destroyed although one form of energy can be converted into the other form and vice versa.

The extended objects complete kinetic energy is described as the sum of the translational kinetic energy of the centre of mass and rotational kinetic energy of the centre of mass. NUMERICALS BASED ON WORK ENERGY AND POWER. The answers given here for the speed values are presuming that all the kinetic energy of the ball is in the form of translational kinetic energy.

E ½Iω 2 where I is the moment of inertia and ω is the angular velocity. This is the way to find the moment of inertia for cubes boxes plates tiles rods and other rectangular stuff. Work Energy and Power This chapter is about Work done by a force Kinetic energyPotential energy Conservative forces Law of Conservation of energyPower Elastic Inelastic Collisions Notes Work Energy and Power.

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