If someone wanted to move the planet mercury to a higher orbit which type of drive would do the best job?
1. An ion drive that collected charged particles from the solar wind.
2. A magnetic drive that pushed against the suns magnetic field
3. Something else (please describe).
Posted in Wind Power
Tagged drive, job, mercury, orbit, PLANET, planet mercury, someone, type
If someone wanted to move the planet mercury to a higher orbit which type of drive would do the best job?
1. An ion drive that collected charged particles from the solar wind.
2. A magnetic drive that pushed against the suns magnetic field
3. Something else (please describe).
Posted in Wind Power
Tagged drive, job, mercury, orbit, PLANET, planet mercury, someone, type
as we know that most of the gears in use today are designed on the basis of two curves involute (path traced by a point on a wire wound on a cirle when it is unwound along its circumference) and cycloidal (locus of any point on a circle rolling over another circle). lets take the latter case. as we say “rolling” it means friction has to be present (a condition for rolling to occur). the gear tooth faces transmit power by applying preesure along the normal to their faces (the direction is called line of action)…but if pressure only is required, can it not be done without friction….even if the above is possible, how is it going to affect the power transimission by a pair of gear teeth?
Posted in Water Power
Tagged basis, circle, circumference, cirle, curves, drive, friction, gear, gear teeth, gear tooth, gears, involute, latter case, locus, Point, power, today, use
instead of conventional propultion, would it be possible to keep a satellite in orbit by using solar cells to power the craft , and drive superconducters magneticly out of phase with the earths magnetic field.
Posted in Wind Power
Tagged craft, drive, EARTH, earths magnetic field, electromagnets, field, orbit, out of phase, phase, propultion, Satellite, SOLAR-CELLS, superconducting, sync
A power boat of mass 460 kg is cruising at a constant speed of 8.9 m/s. The propeller provides a drive force of 740 N. The driver of the boat shuts off the engine, and the boat coasts to a halt. Assume — contrary to fact — that the resistive force due to the water is constant, independent of the boat’s speed.
(a) How far does the boat coast?
(b) How much time does it take for the boat to come to rest after the engine is turned off?
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