Question

Inclined plane two blocks with friction Due this Tuesday, Sep 24 et 11:00 pm (EDT) Body A in the figure weighs 65.7 N, and body Bweighs 53.0 N. The coefficients of friction between A and the incline are p 0.420 and 0.250. Angle of inclination is0=29.5. Let the positive direction of an x-axis be up the Incline. What is the acceleration of A if A is initially at rest? 0.00 m/s 2 You are correct. Your receipt no, is 159-3655 Pravious Tries What is the acceleration of A if A is initially moving up the incline? Sutet awer Incorrect. Tries 1/15 revio Triss What is the acceleration of A if A is initially moving down the incline? Incorrect. Tries 1/15 Previous Tries Sutmt Anr

Answer 1

A WA = 65-7 N 29-5 We 53 N Ms = 0.42 MyE 0.25 a when A is at use acceleratien a 0 mys2 whn A is meveng np the incine, there is elaiive metion between Rhu suyau ncline and A Kinetie ictien fe So, MN acts oppocite to the motien Heru, Fore eauatiom hor A O T-NSne -fk T-Wsune -Axose- mA a mA a and tor - T We mea T We mB a We-mB a- WA Sune MrWA oSe mA a .. wB WA Sne - MWA COS e mAt Me (MA the values Pateing WA and and we 0.5244m/s2 up the incine a- when it meves dewm he diruction rictien is up he indine we ep lace MK Wth K amd every ehing else hemans Same + AKWACOS0 mA a T-Wasne Equation D mg a Ne gut -T + We a 2.885 m/s wp the incine Solving thn