Recent content by DaFuZzMaStA

no weight and its frictionless.. but the question before the one I am doing now has the same thing and asks to calculate the normal force.. dont worry about it i'm goin to school early tomorrow to get someone to help (y) peace out

umm well i just found the force that was pulling up on it isn't that the normal force?

ok a block has a 60n force pulling at 30 degrees above the horizontal i did the sin and cos and that the Fn should be 30n and the force to the right? (not sure what to call that) is 52 N How do i find acceleration from here?

wow must of typed that into the calculator wrong >< so my answer is 2.5?

scale measures 980 Newtons

so ma = 980 - 784 80a=196 a = 2.5 m/s^2 ?

yeah it does.. force of gravity is 784 (m times a) force of gravity is acting on him.. and the force of the elevator which is going up? it does ask how fast the elevator is accelerating.. i drew free body diagram and i got fnet = f - fg

ok that helps.. f=ma right? so the answer is 40? k i got to harder one :S an 80kg guy is on a scale on an elevator and it shows his wait is 980.. how fast is the elevator going?

doesn't help dude haha

And doign some old review I'm going to need some really simple help. (Hah, grade 11 physics :rolleyes: ) 200 N accelerates a 20kg sled at 8.0m/s^2 It's asking the force of friction.. Just give me a formula please :)