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One more try:
f=mass*acceleration
f=550*9.8=5390N
change in distance=122.5m
cosign of angle 0degrees

w=f*change in d*cosign0
w=5390*122.5*cosign0
?? Correct?

The force in this problem would be the mass of the elevator time the acceleration which is 1.75m/s correct. So f in the problem would be 962.5N. For distance I mult. The speed times the time. That is...

Ok so the F in the problem is 9.8m/s^2. I would use cos0. However, the change in distance is unknown. Using the formula d=time * speed, I found it to be 8.75m. So, now would I use the work formula...

A 550 kg elevator starts from rest. It moves upward for 5.00 s with constant acceleration until it reaches its cruising speed, 1.75 m/s.
(a) What is the average power of the elevator motor during...

Huh?

Wow, I'm just a little stumped with that explanation. Would you mind giving me an example?

1. The problem statement, all variables and given/known data
A 14.0 kg block is dragged over a rough, horizontal surface by a 78.0 N force acting at 20.0° above the horizontal. The block is...

Ok, so I said F=ma
F=510(9.8)
F=4998
I then put that in to the equation F=m(v^2/r)
4998=510(v^2/15)
...

I am so lost on how to find the speed in part b of this question..?

Yes, you are correct. Point A is a dip in the track and point B is at the top of a hill on the coaster. So, for part B I use the equation F=m(v^2/v). Mass would be 510kg, radius would be 15.0m, force...

My answer of 14594.16N which I got for the first problem is incorrect. I put the numbers into the formula just as you said and as I thought they would go; however, it is incorrect. Work:
cent....

So here is my thinking for the first problem...
cent. Acceleration equals v^2/r = 19.6^2/10.0 = 38.416
full acceleration equals -9.8+38.416 = 28.616

F=ma
F=510kg (28.616)
F=14594.16 N
...

Capuchin, you have been doing an awesome job helping me out these past few weeks. I just get so caught up in trying to solve the problems and complete work that it kind of takes over my train of...

A roller coaster has a mass of 510kg when fully loaded with passengers. The radius at point A is 10.0 m and the radius at point B is 15.0 m.

-If the vehicle has a speed of 19.6 m/s at point A,...

YAY I actually figured this one out on my own. Exciting!!

A block of mass 8.00 kg is pushed up against a wall by a force P that makes a 50.0° angle with the horizontal. The coefficient of static friction between the block and the wall is 0.27. Determine the...

I'm thinking that I would use the equation:
V=Vo + at
V=0 + (3.18)(2)
V= 6.36 seconds

Am I on the right path?

I'm not looking for the correct answer. I would never ask you to give me the answer. I am willing to do the work to find the answer. I just don't know where to begin.

It doesn't say. The question is worded exactly the way I tyepd it?

Oops just kidding. I'm still unsure of how to find the speed taking into account, the mass, acceleration and time. Is there a formula for that?

1. The problem statement, all variables and given/known data

Two objects are connected by a light string that passes over a frictionless pulley, as in Figure P5.26. The incline is frictionless, m1...

Question: Besides its weight, a 2.70 kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (4.20 - 3.30) m, where the direction...

1.A hawk is flying horizontally at 11.0 m/s in a straight line, 220 m above the ground. A mouse it has been carrying struggles free from its grasp. The hawk continues on its path at the same speed...

So I would take the absolute value of A+B which was 4i+-5j? I would do that by taking the square root of (4squared + -5squared)? And do the same for the absolute value of A-B which was 6i + -1j?...

YAY, for the first question, I completed all parts except c. I was thinking that since he skated 9.80m when he went half way around the circle then the magnitude of displacemnt would be 19.6m when he...

Hello. I'm having trouble with two questions regarding vectors. I'm not asking for solutions-just a step in the right direction.

1)A skater glides along a circular path of radius 4.90m.
a)if he...

I am having trouble with three questions on a homework set. Could someone please offer help as how to solve these problems. Other examples would be great! Thanks

1) A daring ranch hand sitting on...

I am having trouble answering this problem. Please offer any suggestion. There are several parts to be answered:

1) An object moves along the x axis according to the equation x(t) = (3.90t2 -...