On a frictionless plane inclined at angle 303. The box is connected via a cord of negligible mass to a box of laundered money (mass m2 " 2.0 kg) on a frictionless plane inclined at angle u2 " 603. The pulley is frictionless and has negligible mass. What is the tension in the cord?

T = 1.73 kg

Explanation:

Let's use Newton's second law for this balance problem

We draw a coordinate system with the x axis parallel to the plane and the Y axis perpendicular

The only force we have to lay down is the weight (W)

Wx = W sin θ

Wy = W cos θ

Wx = 2.0 ain 60

Wx = 1.73 kg

Wy = 2.0 cos 60

Wy = 1.0 kg

Y Axis

N-Wy = 0

X axis

T - Wx = 0

T = Wx

T = 1.73 kg