Home I Student:jtp15rlsulross.edu My ACCO Class Management Help Newtons Law and

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Home I Student:jtp15rlsulross.edu My ACCO Class Management Help Newtons Law and Application Begin Date: 10/4/2017 1200:00 AM-Due Date: 10/25/2017 12:00:00 AM End Date: 11/23/2017 12:00:00 AM (5%) Problem 18: A block with mass m/ 71 kg rests on the surface ofa horizontal table which has a coefficient of kinetic friction of H 0.51. A second block with a mass m2 = 8.1 kg is connected to the first by an ideal pulley system such that the second block is hanging vertically. The second block is released and motion occurs IM ©theexpert ta.com 20% Part (a) Using the variable T to represent tension, write an expression for the sum of the forces in the y direction, ry, for block 2 20% Part (b) Using the variable r to represent tension, write an expression for the sum of the forces in the x direction, EF. for block 1 R e, 20% Part (c) Write an expression for the magnitude of the acceleration of block 2, a, n terms of the acceleration of block 1 a, (Assume the cable connecting the masses is ideal.) 20% Part (d) Write an expression using the variables provided for the magnitude of the tension force, T > 20% Part (e) What is the tension. Tin Newtons? Grade Summary Deductions Potential 096 100% sinO cos0 cotan()-1-asin()| acoso Submissions Attempts remaining: 20 ( per attempt) detailed view atanO aco sinhO

Explanation / Answer

A)forces in Y direction for m2:

Fy = m2g - T

B)forces in X direction for m1:

Fx = T - uk m1 g

C)the blocks will have same acceleration

a2 = a1

D)T = g m1 m2 (1 + uk)/(m1 + m2)

E)T = g m1 m2 (1 + uk)/(m1 + m2)

T = 9.81 x 7.1 x 8.1(1 + 0.51)/(7.1 + 8.1) = 56 N

Hence, T = 56 N

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