Asked by Lindsay

A block of mass 7.5 kg is pulled along a horizontal frictionless floor by a cord that exerts a force of 31.0 N at an angle 26.3° above the horizontal. What is the magnitude of the acceleration of the block?

I have nooo clue what to do for this one. Can someone please show me the steps?
Answered by bobpursley
Well, the component of force horiontal, doing the pulling is 31cosTheta.

Forcehorizontal= mass* acceleration

solve for acceleration.
Answered by Lindsay
Now it asks for the normal force exerted on the mass by the floor. Do I need to use the acceleration for that?
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