Question

At the instant shown the 100-lb block A is moving down the plane at 6 ft/s while being attached to the 50-lb block B.

At the instant shown the 100-lb block A is moving down the plane at 6 ft/s while being attached to the 50-lb block B. The coefficient of kinetic friction between the block and the incline is uk = 0.3. Neglect the mass of the pulleys and cables. (Figure 1) Part A Determine the acceleration of A before it stops. Express your answer to three significant figures and include the appropriate units. a = Value Units Submit Request Answer Figure < 1 of 1 Part B Determine the distance A slides before it stops Express your answer to three significant figures and include the appropriate units. Value Units Submit Request Answer Provide Feedback

Answer 1

A a = 14g a Too - - 14x 32 150 acceleration = 2.986 ft/22 T vel - 6ft/s 6 Distance A slides v2 = u2+ zas mg sino a - 2 x 2.986X5 > f umg cose S = 100th s = 0.3x300xy 36 2x9.986 -6.028 = 6:0254 - 2ug masino -609 . A slides = 16+028 ft Ang Force Balance for lool - It aug- bog = 1009 Force balance for solb: 50g -T = 50 a from 6 4 6 a= 149 150