How I can prove that the ball did not fall from the top of the loop?
A tennis ball with an initial speed of 4.03 m / s, and goes to top of a loop of diameter 0.9 m, giving a final velocity of 2.38 m / s. I thought all this information, but then the problem asks me show that the ball did not fall from the top of the loop. I know the normal force, the weight of the ball (do not know the mass), and centripetal acceleration. all going to below. But what next?
The ball stays in the loop as long as the normal force is necessary to keep it moving in a circle. Thus, for show that the ball rests on the circuit, you must calculate the gravitational force and demonstrate that it is less than the force necessary to maintain the centripetal acceleration the top of the loop. That is, show that F (gravitational) <F (centripetal) or mg ² mv </ r (Note that the M to cancel, so there is no real need know the mass of the ball, and r is only half the diameter.)
loop on top
|
|
Nylon Pocket Organizer with Matching Hook-and-Loop $7.99 |
|
|
Nylon Pocket Organizer with Matching Hook-and-Loop $7.99 |
|
|
Nylon Pocket Organizer with Matching Hook-and-Loop $7.99 |
|
|
MOTHER OF PEARL ROSEBOWL LOOP FEET TOP LIPS FORM RIBBON APPLIED EDGE AND FEET $270.00 |
|
|
NWT MENS DIESEL RETRO STYLE EMBROIDERED BOWLING TOP LOOP SHIRT SLIM XL EXCELLENT $69.00 |
|
|
Apple Iphone 4S New Cellet Black Top Load Real Leather Case Folio Clip Belt Loop $9.95 |
|
|
19th C A.W. Faber Gold Filled Retractable Extension Loop Top Pencil $29.99 |
|
|
Apple Iphone 4S New Cellet Black Top Load Bold Leather Case Folio Clip Belt Loop $9.95 |
|
|
Loop New Jrs. Womens Green Knit T Shirt Top Sz 13/15 Retail $39.95 $11.17 |
|
|
Apple Iphone 4 4S New Cellet Black Top Load Leather Case Folio Clip Belt Loop $9.95 |
|
|
Contigo AUTOSEAL West Loop Stainless Steel 20-Ounce Travel Mug Never spill another drop. 100-Percent spill- and leak-proof travel mug uses exclusive AUTOSEAL technology to prevent accidental spills. Press the AUTOSEAL button to sip, and release the button to automatically seal. This self-sealing lid technology is combined with a double-wall, vacuum-insulated, stainless steel mug, providing exceptional temperature retention. Beverages stay hot for 6 hours or c… |
|
|
Lodge Pro Logic 14 Cast Iron Wok, Black $45.99 Provides cooks with superior heat retention to prepare asian recipes. Sturdy base and consistent source of heat helps keep the Wok stationary on the stove top. Assist handles provide ease in handling…. |
|
|
Lodge Logic 5-Quart Double Dutch Oven and Casserole with Skillet Cover $34.97 Every cook’s dream: a 5-qt. Dutch oven with a lid that easily converts to a 10.25-inch skillet. A natural for preparing countless recipes, the Double Dutch will quickly become your favorite piece of cookware….. |
|
|
Daniel Powter $3.28 “Bad Day,” the first single off Daniel Powter’s small masterpiece of a debut disc, has been divebombing TV-watching Americans for months. Turn on “American Idol” and there it is, accompanying the latest axed contestant off the stage. Switch over to Showtime, and it’s on promos for “Weeds.” The VH1 video is inescapable. Yet nobody knows who the guy is (a 35-year-old French Canadian, it turns out), … |
|
|
Orbital 2 $12.85 Orbital Orbital 2 US CD album… |
