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# Energy Transfer in Mechanical Systems

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A wheel is 800mm in diamiter and has a mass of 1000kg. on a horizontal surface without skidding, the vehicle accelerates uniformly at 0.5m/s^2 for 5 seconds. calculate the showings of all your workings to find the combined linear and kinetic energy of the wheel after the period of acceleration.

https://brainmass.com/engineering/transport-engineering/energy-transfer-in-mechanical-systems-84671

#### Solution Summary

Solution attaches a Word document showing the calculations necessary for finding the combined linear and kinetic energy of a wheel after acceleration.

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## Physics: Energy conversions, mechanical energy, elastic vs inelastic, initial speed, torques, energy required, angular speed, doppler effect

A ball dropped to the floor rises to a height less than its original height. Discuss some of the energy conversions that take place in a system like this.

When a mass is placed on top of a vertical spring, the spring compresses and the mass moves downward. Discuss this system in terms of mechanical energy.

Your car rolls slowly in a parking lot and bangs into the metal base of a light pole. In terms of safety, is it better for your collision with the light pole to be elastic or inelastic? Explain

At the grocery store you pick up a can of beef broth and a can of chunky beef stew. The cans are identical in diameter and weight. Rolling both of them down the aisle with the same initial speed, you notice that the can of chunky stew rolls much farther than the can of broth. Why?

When a motorcycle accelerates rapidly from a stop it sometimes "pops a wheelie"; that is, its front wheel may lift off the ground. Explain this behavior in terms of torques

A beetle sits near the rim of a turntable that is at rest, but is free to rotate about a vertical axis. What happens if the beetle begins to walk around the perimeter of the turntable? Does the beetle move relative to the ground? Consider the limits of a very massive turntable and a very light turntable.

Is the amount of energy required to get a spacecraft from the Earth to the Moon greater than, less than, or the same as the energy required to go from the Moon to the Earth? Explain.

A person rides on a Ferris wheel that rotates with constant angular speed. If the Sun is directly overhead, does the person's shadow on the ground undergo periodic motion? Does it undergo simple harmonic motion? Explain.

A "radar gun" is often used to measure the speed of a major league pitch by reflecting a beam of radio waves off a moving ball. Describe how the Doppler Effect can give the speed of the ball from a measurement of the frequency of the reflected beam

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