# Mass and cord tension of mass on a frictionless plane

A block with unknown mass M is held stationary on a frictionless plane inclined at angle b= 30 degrees, by a cord attached to the ceiling. The angle between cord and ceiling is angle a=50 degrees. The normal force exerted on the block by the plane is N= 74 nt. SEE ATTACHMENT #1 for arrangement.

Part a. On the diaqram shown as ATTACHMENT #1, show as arrows, all forces acting on the block.

Part b. Find M, the mass of the block, and T, the tension force in the cord.

https://brainmass.com/physics/scalar-and-vector-operations/mass-cord-tension-mass-frictionless-plane-11041

#### Solution Preview

Part a.

SEE ATTACHMENT #2 for all acting forces and x,y system with x parallel to the plane.

Part b. Step 1.

For stationary objects, 'net force = 0' holds for both x and y directions. Thus we can write that; (1) 'total +x forces must equal total -x forces'. Note the angles ...

#### Solution Summary

The expert examines the mass and cord tension of mass on a frictionless plane.