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Two-blocks-of-masses-m-1-and-m-2-are-placed-in-contact-with-each-other-on-a-horizontal-platform-The-coefficient-of-friction-between-the-platform-and-the-two-blocks-is-the-same-The-platform-moves-w




Question Number 24465 by Tinkutara last updated on 18/Nov/17
Two blocks of masses m_1  and m_2  are  placed in contact with each other on a  horizontal platform. The coefficient of  friction between the platform and the  two blocks is the same. The platform  moves with an acceleration. The force  of interaction between the blocks is
$$\mathrm{Two}\:\mathrm{blocks}\:\mathrm{of}\:\mathrm{masses}\:{m}_{\mathrm{1}} \:\mathrm{and}\:{m}_{\mathrm{2}} \:\mathrm{are} \\ $$$$\mathrm{placed}\:\mathrm{in}\:\mathrm{contact}\:\mathrm{with}\:\mathrm{each}\:\mathrm{other}\:\mathrm{on}\:\mathrm{a} \\ $$$$\mathrm{horizontal}\:\mathrm{platform}.\:\mathrm{The}\:\mathrm{coefficient}\:\mathrm{of} \\ $$$$\mathrm{friction}\:\mathrm{between}\:\mathrm{the}\:\mathrm{platform}\:\mathrm{and}\:\mathrm{the} \\ $$$$\mathrm{two}\:\mathrm{blocks}\:\mathrm{is}\:\mathrm{the}\:\mathrm{same}.\:\mathrm{The}\:\mathrm{platform} \\ $$$$\mathrm{moves}\:\mathrm{with}\:\mathrm{an}\:\mathrm{acceleration}.\:\mathrm{The}\:\mathrm{force} \\ $$$$\mathrm{of}\:\mathrm{interaction}\:\mathrm{between}\:\mathrm{the}\:\mathrm{blocks}\:\mathrm{is} \\ $$
Commented by Tinkutara last updated on 18/Nov/17
Commented by ajfour last updated on 18/Nov/17
Whether the blocks accelerate  at the same rate as the platform,  or not, the relative acceleration  of blocks will be zero, so no  no interaction of blocks ..
$${Whether}\:{the}\:{blocks}\:{accelerate} \\ $$$${at}\:{the}\:{same}\:{rate}\:{as}\:{the}\:{platform}, \\ $$$${or}\:{not},\:{the}\:{relative}\:{acceleration} \\ $$$${of}\:{blocks}\:{will}\:{be}\:{zero},\:\boldsymbol{{so}}\:\boldsymbol{{no}} \\ $$$$\boldsymbol{{no}}\:\boldsymbol{{interaction}}\:\boldsymbol{{of}}\:\boldsymbol{{blocks}}\:.. \\ $$
Commented by Tinkutara last updated on 18/Nov/17
Thank you very much Sir!
$$\mathrm{Thank}\:\mathrm{you}\:\mathrm{very}\:\mathrm{much}\:\mathrm{Sir}! \\ $$

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