Consider another special case in which the inclined plane is vertical (θ=π/2θ=π/2). In this case, for what value of m1m1m_1 would the acceleration of the two blocks be equal to zero?.

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

step-by-step explanation:

duck you

26- 6 = 20. erica has 20 bottles left