2014年7月10日 · This question has been posted and I do apologize for posting again, but I am having trouble determining when to use Fnet=ma or Fnet= 0 for questions like these. I have solved it but need help interpreting the question. "At a construction site, a small crane is raising two boxes of nails on a plank to the roof.

2015年9月23日 · Homework Statement Newton’s second law says F->net=ma->. So is ma-> a force? Explain. -> is a top bar arrow. Homework Equations F=ma or Fnet=ma The Attempt at a Solution (F) is a force and (m) is mass and (a) is acceleration. I don't really know what else this question is asking...

2008年5月6日 · Fnet = ma The Attempt at a Solution Part 1: Fa pushes on block A: Block A has Fa pushing to the right, and block B pushing to the left so Fnet = massblockA *acceleration = Fa - 32N Block B pushes back on block A (only horizontal force on it) Fnet = massblockB *acceleraton = 32N mass blockA + massblockB = 30kg

2009年7月20日 · Why is F = ma equals to F =mg? Also what is F = Fa - Ff? It came from this question. The question is c) If the box moves at a constant speed of 2m/s-1 when a 50N force is applied, what is the frictional force? (Box is 10kg) Answer: Constant speed => a = 0 F = ma = 0 F = Fa - Ff (what's this suppose to mean?) Ff = Fa = 50N

2019年6月10日 · Fnet = ma , so I need to find a which equals v=V0+at = 0+1.6/2 = .8m/s^2 So Fnet = .072kg*.8m/s^2 = 0.576N So the net force acting on the block is 0.576 N or 0.58N Now to find the friction Force is F=ukmg F= 0.64*0.72*9.8 = 4.51584 or 4.52 N Then I must find the force for which the child actually pushes on the block of wood

2008年12月7日 · [b]1. Pulling up on a rope, you lift a 4.00-kg bucket of water from a well with an acceleration of 2.40m/s2. What is the Tension in the rope? [b]2. I know the basic equations like net force = mass X acceleration. Is the tension my net …

2008年5月14日 · I multiplied gravity times both weight fg=mg, fg=15(9.80) and fg=12(9.80) giving me 147 newtows and 117.6 Newtons than i did Fnet=ma Fnet=147n-117.6n Fnet=29.4 than i did 29.4divided by 27 giving me 1.088889 and i rounded that too 1.1m/s squared. which was the right answer in my answer key

2007年9月16日 · Homework Statement A 56.0 kg girl weighs herself by standing on a scale in an elevator. What is the force exerted by the scale when the elevator is descending at a constant speed of 10 m/s? What is the force exerted by the scale if the elevator is accelerating downward with an acceleration...

2007年2月1日 · sorry i got one more question, its conceptual and i have a little problem with it, 1. The problem: Bill and Susan are both standing on identical skateboards (with really good ball bearings) initally at rest. Bill weighs three times as much as …

2024年10月16日 · If we reorder F = ma, we get F/m = a And putting general acceleration formula into Newton second law of motion F = ma F = m x (v-u) /t F = (mv - mu) /t Hence, proved that acceleration is not a force and F = ma equation is absolutely right. Here is another proof F = dp/dt is the generalized version of newton's second law p = m x v F = dp/dt F ...