- #1

nicky670

- 21

- 1

- Homework Statement
- In another set up where mass of block A is 𝑚𝐴 = 10.0 kg and the mass of block B is 𝑚𝐵 =12.0 𝑘𝑔. A spring with constant𝑘 = 90 𝑁 / 𝑚 is attached to block A as shown. The incline plane is 𝜃 = 37∘ and the coefficient of kinetic friction between the block A and theincline is 𝜇𝑘 = 0.30 as before. Block B is moving down and block A moving up the slope. (The magnitude of the spring force is

given by |𝐹𝑠𝑝| = 𝑘𝑥 where 𝑥 is the extension.)

- Relevant Equations
- For Ma(perpendicular) = FN - Magcos(titre) = 0

Ma (Parallel) = Fsp + T - Ffriction - Magsin(titre) = Ma(a)

For Mb: Mbg - T = Mb(a)

Fsp = 90 x 0.12 = 10.8

Ffriction = Magcos(titre) x 0.30

I got the answer 2.09ms2 when the correct answer is 1.11ms2. What am i doing wrong here?

Ffriction = Magcos(titre) x 0.30

I got the answer 2.09ms2 when the correct answer is 1.11ms2. What am i doing wrong here?

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