- #1

- 92

- 0

The weights of the blocks A, B and C, shown in figure worth, 89N, 44,5 N and 44,5 N, respectively. The blocks are initially at rest. Knowing that B travels 2,44 m in 2s, determine (a) the module of F and (b) the tension on the rope AD. Discard the masses of the pulleys and friction.

Answer:

(a) 7,37 N

(b) 92,7 N

My solution

Block B

ZFy = mB . aB

T - F - mB.g = mB . aB

Block C

ZFy = mC . aC

-mC . g + T = mC . aC

aB = -aC

I can not find the answer of the book

Answer:

(a) 7,37 N

(b) 92,7 N

My solution

Block B

ZFy = mB . aB

T - F - mB.g = mB . aB

Block C

ZFy = mC . aC

-mC . g + T = mC . aC

aB = -aC

I can not find the answer of the book