Question Number 75001 by necxxx last updated on 05/Dec/19
$${A}\:{block}\:{of}\:{mass}\:\mathrm{0}.\mathrm{2}{kg}\:{rests}\:{on}\:{an}\:{incline} \\ $$$${plane}\:{of}\:\mathrm{30}°\:{to}\:{the}\:{horizontal}\:{with}\:{a} \\ $$$${velocity}\:{of}\:\mathrm{12}{m}/{s}.{If}\:{the}\:{coefficient}\:{of} \\ $$$${sliding}\:{friction}\:{is}\:\mathrm{0}.\mathrm{16}, \\ $$$$\left({i}\right){determine}\:{how}\:{far}\:{up}\:{the}\:{plane}\:{the} \\ $$$${mass}\:{travels}\:{before}\:{stoping}. \\ $$$$\left({ii}\right){if}\:{the}\:{block}\:{returns},{what}\:{is}\:{the} \\ $$$${velocity}\:{of}\:{the}\:{block}\:{at}\:{the}\:{bottom}\:{of}\:{the} \\ $$$${plane}. \\ $$$$ \\ $$$$\left({g}=\mathrm{9}.\mathrm{8}{m}/{s}\right) \\ $$
Commented by necxxx last updated on 05/Dec/19
$${please}\:{help} \\ $$
Commented by mr W last updated on 06/Dec/19
$${language}\:{of}\:{question}\:{is}\:{not}\:{clear} \\ $$$${to}\:{understand}.\:{on}\:{one}\:{side}\:{the} \\ $$$${block}\:{rests}\:{on}\:{the}\:{inclined}\:{plane}, \\ $$$${on}\:{the}\:{other}\:{side}\:{the}\:{block}\:{should} \\ $$$${move}. \\ $$