Question

A). A cyclist (see fig.) initially at rest at the top of the Continental Divide (altitude 2520 meters) in Yellowstone national Park. The cyclist makes a risky straight run for the Old Faithful Lodge (altitude 1930m) without using the brakes. Neglect forces due to friction, the use of muscle, brake or pedals. sol a) Find the final speed of the cyclist in the absence of friction. b) If there were friction along the path, how much energy (converted to heat) is lost if the cyclist arrived at a speed of 27 m/s fritid 1

Answer 1

Answer. All there is under the ntluence or 3ravity force which is Conserva1e So here Prinep onservatiom ot energ we Cen ASO mg i-2) 29.8X (2S20- 1930) V2 11SG4 Speed u) LOT.53 lost due to riction mv2 mg (H-H2)- m(9.8x590-2 w mx 5417.5 Jue

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