Ablock of wood weighing 18 pounds rests on an inclined plane that makes an angle of 60 with the horizontal. how much of the friction force is needed to prevent the block from sliding on the plane?
round answer to nearest whole number. do not use a space or decimal in your answer or it will be marked wrong

Force of friction will be 69 N

Step-by-step explanation:

Given a block of wood weighing 18 pounds rests on an inclined plane that makes an angle of 60 with the horizontal. we have to find the force of friction needed to prevent the block from sliding on the plane.

As the plane makes an inclination, vertical force will act on the wood to slide. Therefore, the friction force must be equal to vertical force so that the wood not to slide.

 where F is friction force, m is weight of an object and is inclination angle made from the horizontal.

As 1 pound=0.453592 kg

∴ 18 lbs = 8.165 kg

         = 8.165 x 9.8 x sin 60°

         = 69.29 N ≈ 69 N  

this is a very good question

step-by-step explanation:

i got a hair cut today from my mom not to flex just to flex kim jon un is one rad fellow i'd say you'd need to take the hairline in kinda like a box shape like someone rammed a lego brick into your head. from there you really need to take the top up keeping with that boxy aesthetic, finally coat the whole thing with gel if your country economics are failing or whatever you can just coat it with the starving children's food rations. about 5 orphans per strand is a good ratio. good luck with the fresh cut my dude

2 pecks

step-by-step explanation: