15-101 - 15101 The 10-lb block rests on a surface for which mk = 0.5 It is acted upon by a radial force of 2 lb and a horizontal force of 7 lb always

15-101 - 15101 The 10-lb block rests on a surface for which...

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15–101. SOLUTION A n s . t = 3.41 s ( 10 32.2 )(2)(4) + (7 cos 30°)(4)( t ) - 0.5(10)(4) t = 10 32.2 (13.67)(4) ( H A ) t + © L M A dt = ( H A ) 2 v = 13.67 ft > s 20 - 7 sin 30° - 2 = 10 32.2 ( v 2 4 ) © F n = ma n ; The 10-lb block rests on a surface for which It is acted upon by a radial force of 2 lb and a horizontal force of 7 lb, always directed at 30° from the tangent to the path as shown. If the block is initially moving in a circular path with

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