part constantly trys to go to a position under ground instead of staying on top of the ground?

So i have this code basically it drags the part to the cameras position but going out 10 studs the thing is when you drag the mouse to the ground the part constantly glitches into it like it's trying to go to a position under it, So i know the problem but i dont know how to fix, My guesses is raycast? Or Something like MoveTo where the model automatically goes on top of the part

local bp = Instance.new("BodyPosition")
bp.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
bp.D = 700
bp.Parent = workspace.part
game:GetService("RunService").RenderStepped:Connect(function()
bp.Position = workspace.CurrentCamera.CFrame.Position + mouse.Hit.LookVector * 10
end)