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Category: Mechanics

A-block-of-mass-0-2kg-rests-on-an-incline-plane-of-30-to-the-horizontal-with-a-velocity-of-12m-s-If-the-coefficient-of-sliding-friction-is-0-16-i-determine-how-far-up-the-plane-the-mass-travels-bef

Question Number 75001 by necxxx last updated on 05/Dec/19 $${A}\:{block}\:{of}\:{mass}\:\mathrm{0}.\mathrm{2}{kg}\:{rests}\:{on}\:{an}\:{incline} \\ $$$${plane}\:{of}\:\mathrm{30}°\:{to}\:{the}\:{horizontal}\:{with}\:{a} \\ $$$${velocity}\:{of}\:\mathrm{12}{m}/{s}.{If}\:{the}\:{coefficient}\:{of} \\ $$$${sliding}\:{friction}\:{is}\:\mathrm{0}.\mathrm{16}, \\ $$$$\left({i}\right){determine}\:{how}\:{far}\:{up}\:{the}\:{plane}\:{the} \\ $$$${mass}\:{travels}\:{before}\:{stoping}. \\ $$$$\left({ii}\right){if}\:{the}\:{block}\:{returns},{what}\:{is}\:{the} \\ $$$${velocity}\:{of}\:{the}\:{block}\:{at}\:{the}\:{bottom}\:{of}\:{the} \\…

A-5kg-block-rests-on-a-30-incline-The-coefficient-of-static-friction-between-the-block-and-incline-is-0-20-How-large-a-horizontal-force-must-push-on-the-block-if-the-block-is-to-be-on-the-verge-of-sl

Question Number 74678 by necxxx last updated on 28/Nov/19 $${A}\:\mathrm{5}{kg}\:{block}\:{rests}\:{on}\:{a}\:\mathrm{30}°\:{incline}.{The} \\ $$$${coefficient}\:{of}\:{static}\:{friction}\:{between} \\ $$$${the}\:{block}\:{and}\:{incline}\:{is}\:\mathrm{0}.\mathrm{20}.{How}\:{large} \\ $$$${a}\:{horizontal}\:{force}\:{must}\:{push}\:{on}\:{the} \\ $$$${block}\:{if}\:{the}\:{block}\:{is}\:{to}\:{be}\:{on}\:{the}\:{verge}\:{of} \\ $$$${sliding}\:\left({a}\right){up}\:{the}\:{incline}\:\left({b}\right)\:{down}\:{the} \\ $$$${incline}? \\ $$ Answered…

Question-74594

Question Number 74594 by ajfour last updated on 27/Nov/19 Commented by ajfour last updated on 27/Nov/19 $${Reposted}:\:{Q}.\mathrm{74557} \\ $$$${A}\:{particle}\:{of}\:{mass}\:{m}\:{tied}\:{to}\:{O} \\ $$$${with}\:{a}\:{string}\:{of}\:{length}\:{b}\:{and} \\ $$$${released}\:{at}\:{t}=\mathrm{0}\:{at}\:{the}\:{rim}\:{of} \\ $$$${a}\:{hollow}\:{hemisphere}\:{crucible}.…

Question-74557

Question Number 74557 by ajfour last updated on 26/Nov/19 Commented by ajfour last updated on 26/Nov/19 $${In}\:{a}\:{fixed}\:{frictionless}\:{crucible} \\ $$$${in}\:{the}\:{form}\:{of}\:{hollow}\:{hemisphere}, \\ $$$${radius}\:{R},\:{a}\:{small}\:{mass}\:{m}\:{is}\: \\ $$$$\:{released}\:{with}\:{a}\:{string}\:\left({length}\right. \\ $$$$\left.\:{b}\:<\:\sqrt{\mathrm{2}}\:{R}\:\right)\:{attaching}\:{it}\:{to}\:{a}\:{point}…

A-rope-inclined-at-angle-37-to-the-horizontal-is-used-to-drag-a-50kg-block-along-a-level-floor-with-an-acceleration-of-1m-s-2-The-coefficient-of-friction-between-the-block-and-the-floor-is-0-2-Wh

Question Number 74522 by necxxx last updated on 25/Nov/19 $${A}\:{rope}\:{inclined}\:{at}\:{angle}\:\mathrm{37}°\:{to}\:{the}\: \\ $$$${horizontal}\:{is}\:{used}\:{to}\:{drag}\:{a}\:\mathrm{50}{kg}\:{block} \\ $$$${along}\:{a}\:{level}\:{floor}\:{with}\:{an}\:{acceleration} \\ $$$${of}\:\mathrm{1}{m}/{s}^{\mathrm{2}} \:.{The}\:{coefficient}\:{of}\:{friction} \\ $$$${between}\:{the}\:{block}\:{and}\:{the}\:{floor}\:{is}\:\mathrm{0}.\mathrm{2}. \\ $$$${What}\:{is}\:{the}\:{tension}\:{in}\:{the}\:{rope}? \\ $$ Commented by…