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## Homework Statement

a crate of mass m = 87 kg is pushed at a constant speed up a frictionless ramp (θ = 29°) by a horizontal force F. The positive direction of an x axis is up the ramp, and the positive direction of a y axis is perpendicular to the ramp. (a) What is the magnitude of F? What is the magnitude of the normal force on the crate?

## Homework Equations

I'm not sure I know F=ma

## The Attempt at a Solution

I know gravitational force=mg cos(theta)=87(9.8)(cos(29))=745.7