A mass of 8 kg lies on a horizontal, frictionless floor. A force of 72 Newtons pushes to the left (negative x direction) with a force of 72 Newtons. Another force of unknown magnitude pushes the mass in a direction of 21.4 degrees above the positive x axis. The mass is originally at rest before these forces are applied and 2.4 seconds after the forces have been applied, the mass has moved to the left a distance of 11.1 meters. What is the magnitude of the unknown force in Newtons?

Question

A mass of 8 kg lies on a horizontal, frictionless floor.  A force of 72 Newtons pushes to the left (negative x direction)  with a force of 72 Newtons.  Another force of unknown magnitude pushes the mass in a direction of 21.4 degrees above the positive x axis.  The mass is originally at rest before these forces are applied and 2.4 seconds after the forces have been applied, the mass has moved to the left a distance of 11.1 meters.  What is the magnitude of the unknown force in Newtons?

Please help me solve this problem =/

bobpursley · Answer

your use of the word "above"...is it operating against gravity, or is it still on the horizontal perpendicular to the x direction?

Kaleigh · Answer

No it is not Operating against gravity. It is still on the horizontal

Ashly · Answer

Keleigh are you a tutor? at Bobpursley: No it's not Operating against gravity. It's still on the horizontal perpendicular to the x-direction.