help

[nelone]

A block of mass 8.0 kg is on the verge of sliding down a 450 incline. What is the magnitude of the horizontal force F, if the coefficient of static friction between the block and the incline is 0.35? I'm really stuck...appreciate any help. Thanks!

[Parth Dave]

Where are you stuck? What have you done?

[Gza]

I feel like a broken record when I say this but here goes: Draw a free body diagram, and break up the forces into x and y components. Now just look at the x direction for your force. I'm assuming that the incline is 45 degrees, so that should make the trigonometry involved very easy.