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Category: Mechanics

Question-52752

Question Number 52752 by afachri last updated on 12/Jan/19 Commented by afachri last updated on 12/Jan/19 $$\boldsymbol{\mathrm{Dear}}\:\boldsymbol{\mathrm{Sir}},\: \\ $$$$\boldsymbol{\mathrm{i}}'\boldsymbol{\mathrm{m}}\:\boldsymbol{\mathrm{just}}\:\boldsymbol{\mathrm{wondering}}\:\boldsymbol{\mathrm{is}}\:\boldsymbol{\mathrm{there}}\:\boldsymbol{\mathrm{a}}\:\boldsymbol{\mathrm{unique}}\:\boldsymbol{\mathrm{solution}} \\ $$$$\boldsymbol{\mathrm{for}}\:\boldsymbol{\mathrm{F}}_{\mathrm{2}} \:\boldsymbol{\mathrm{and}}\:\boldsymbol{\alpha}\:\boldsymbol{\mathrm{if}}\::\:\boldsymbol{{the}}\:\boldsymbol{{resultant}}\:\boldsymbol{{of}}\:\boldsymbol{\mathrm{F}}_{\mathrm{1}} \:\boldsymbol{\mathrm{and}} \\ $$$$\boldsymbol{\mathrm{F}}_{\mathrm{2}}…

Question-52611

Question Number 52611 by ajfour last updated on 10/Jan/19 Commented by ajfour last updated on 11/Jan/19 $${Find}\:{tensions}\:{in}\:{both}\:{strings}\:{if} \\ $$$$\left({i}\right)\:\bigtriangleup{ABC}\:{be}\:{equilateral}\:{of}\:{side}\:{a}. \\ $$$$\left({ii}\right)\:{it}\:{be}\:{of}\:{sides}\:{a},{b},{c}.\:\: \\ $$ Commented by…

He-went-to-work-by-his-car-at-speed-120-km-hr-and-back-home-the-same-way-90-km-hr-find-the-average-speed-for-the-entire-distance-traveled-

Question Number 183457 by Acem last updated on 26/Dec/22 $${He}\:{went}\:{to}\:{work}\:{by}\:{his}\:{car}\:{at}\:{speed}\:\mathrm{120}\:{km}/{hr} \\ $$$$\:{and}\:{back}\:{home}\:{the}\:{same}\:{way}\:\mathrm{90}\:{km}/{hr},\:{find}\:{the} \\ $$$$\:{average}\:{speed}\:{for}\:{the}\:{entire}\:{distance}\:{traveled}. \\ $$$$ \\ $$ Answered by Matica last updated on 26/Dec/22…

A-90cm-uniform-lever-has-a-load-of-30N-suspended-at-15cm-from-one-of-its-ends-If-the-fulcrum-is-at-the-centre-of-gravity-what-is-the-force-that-must-be-applied-to-its-other-end-to-keep-it-in-horizonta

Question Number 52340 by Necxx last updated on 06/Jan/19 $${A}\:\mathrm{90}{cm}\:{uniform}\:{lever}\:{has}\:{a}\:{load} \\ $$$${of}\:\mathrm{30}{N}\:{suspended}\:{at}\:\mathrm{15}{cm}\:{from} \\ $$$${one}\:{of}\:{its}\:{ends}.{If}\:{the}\:{fulcrum}\:{is}\:{at} \\ $$$${the}\:{centre}\:{of}\:{gravity}\:{what}\:{is}\:{the} \\ $$$${force}\:{that}\:{must}\:{be}\:{applied}\:{to}\:{its} \\ $$$${other}\:{end}\:{to}\:{keep}\:{it}\:{in}\:{horizontal} \\ $$$${equilibrium}? \\ $$ Answered…

Question-52312

Question Number 52312 by ajfour last updated on 06/Jan/19 Commented by ajfour last updated on 06/Jan/19 $${If}\:{lengths}\:{of}\:{strings}\:{l}\:{and}\:{L}\:{are} \\ $$$${such}\:{that}\:{shown}\:{geometry}\:{results}, \\ $$$${find}\:{tension}\:{in}\:{both}\:{strings}. \\ $$ Commented by…

Question-52043

Question Number 52043 by ajfour last updated on 02/Jan/19 Commented by ajfour last updated on 02/Jan/19 $${Except}\:{ground}\:{all}\:{suraces}\:{are} \\ $$$${frictionless}.\:{An}\:{wedge}\:{has}\:{to} \\ $$$${support}\:{two}\:{cyliners}\:{one}\:{top}\:{of} \\ $$$${another}\:{against}\:{wall}.\:{Find} \\ $$$${minimum}\:\mu\:{on}\:{ground}\:{for}…

A-spring-with-length-L-and-spring-constant-k-is-fixed-on-the-ceiling-Hang-a-mass-point-m-on-the-bottom-of-the-spring-Find-the-relation-between-distsnce-h-from-m-to-ceiling-and-time-t-Ignore-air-res

Question Number 182888 by CrispyXYZ last updated on 16/Dec/22 $$\mathrm{A}\:\mathrm{spring}\:\mathrm{with}\:\mathrm{length}\:{L}\:\mathrm{and}\:\mathrm{spring}\:\mathrm{constant}\:{k} \\ $$$$\mathrm{is}\:\mathrm{fixed}\:\mathrm{on}\:\mathrm{the}\:\mathrm{ceiling}.\:\mathrm{Hang}\:\mathrm{a}\:\mathrm{mass}\:\mathrm{point}\:{m} \\ $$$$\mathrm{on}\:\mathrm{the}\:\mathrm{bottom}\:\mathrm{of}\:\mathrm{the}\:\mathrm{spring}.\:\mathrm{Find}\:\mathrm{the} \\ $$$$\mathrm{relation}\:\mathrm{between}\:\mathrm{distsnce}\:{h}\:\mathrm{from}\:{m}\:\mathrm{to}\:\mathrm{ceiling} \\ $$$$\mathrm{and}\:\mathrm{time}\:{t}.\:\mathrm{Ignore}\:\mathrm{air}\:\mathrm{resistance},\:\mathrm{friction}\:\mathrm{and} \\ $$$$\mathrm{gravity}\:\mathrm{of}\:\mathrm{spring}. \\ $$ Answered by mr…