Platform Lift

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a 2.0 * 10^2 g pendulumbob ix raised 22 cm abive its rest position. The bob is released, and it reaches its maximum speed as it passes the rest position.

a) Calculate its maximum speed at that point by applying the law of conservation of energy and assuming that the efficiemcy is 100%.
b) repeat (a) if the efficiency is 94%

* 5) a high raise window washer mass of 72 kg) is standing on a platform (mass 178 kg) suspended on the side of a building. an electric motor does 1.5 * 10^3 J of work on the platform and the worker to raise them to the top floor. The electric energy required to operate the motor for this task is 1.6 * 10^5 J.

a) how high is the platform lifted?
b) calculate the efficiency of the electric motor.

thanks soo much for any help!

The game was a 2D platform game where the player controlled a robot which had to move waste barrels to designated places around the level. The robot couldn’t jump, but could reach higher ground by of lifting itself by some sort of hydraulic system that raised, so it could then grab hold of the higher platform and finally lift its feet

You are designing a hydraulic lift for an automobile garage. It will consist of two oil-filled cylindrical pipes of different diameters. A worker pushes down on a piston at one end, raising the car on a platform at the other end. To avoid injury to your workers, the maximum amount of force a worker should need to exert is 100 N. The diameter of the smaller pipe end is 25 cm.
A) What should be the diameter of the pipe under the platform?
B) If the worker pushes down with a stroke 45.0 long, by how much will he raise the car at the other end?

http://www.biggerfasterstronger.com/details.asp?pID=664&category=0&subcategory=30&size=0&search=&page=

Have you felt His Light beam you up to His awesome presence?

I went outside just now, where the sun was shining right above me, and I felt His awesome presence. I felt His Spirit literally ‘lift’ me off the platform, where I was sitting. I could no longer feel the touch of my feet or the chair where I sat. My head had been bowed in prayer. It was lifted up and back toward the Light of God. I felt my whole body being lifted toward the Light.
No, I am not ‘under’ the influence of none other than the Lord God, Himself.
Call me carazy, I don’t care…
No one can permeate the peace of the Lord God that I feel…
Thumbs ^UP^ everyone!
You guys are so funny! lol!
keep ‘em coming!
Amen Tracy, amen
Thank you!
Oh Frou Frou, you are just too funny today! lol!

how to do it?

Hogwarts Express began to move. All Lily Evans could see were the smiling faces of her mother and father on Platform Nine and Three Quarteres who had come to see her off to her final year at Hogwarts. Slowly, their faces and smiles became distant as they disappeared out of sight. Carefully lifting her trunk Lily began to move forwards to find a seat in the Prefects Carriage. She was the new Head Girl now. It had been a moment of pure joy when she had received her letter and the little badge, which was already pinned to her top. She was almost as happy as she had been on discovering that she was a witch. She moved forwards and at last found a compartment to sit. Nobody was there. She supposed that the Head Boy, whoever it was, would come any second now. She was placing her trunk under her seat when the compartment door slid open. A thin boy with untidy jet-black hair and spectacles entered.

“You?” Lily said before she could stop herself.
“I was about to ask you the same question!” James Potter replied. He was a little red in the face.
“Excuse me, but I’m the Head Girl!” Lily told him, hoping he would leave.
On the contrary, he pointed to a badge just like hers, which was pinned to his shirt. It read ‘Head Boy’.
“Not you!” Lily exclaimed disbelievingly.
James smiled and slowly placed his heavy trunk on the other seat and sat. He was still smiling and it was broader than before.
“Hmm.. so you and me, huh? Head Boy and Head Girl?” He laughed this time. He seemed disgustingly happy.
Lily frowned,”Yeah so?”
“You could sit down, you know. It wouldn’t hurt you,”James said.
There was a moment’s silence and James said,” Now, now Evans. It’s time to put aside our differences. Don’t you think? Else how on earth are we going to perform our duties together?”
Lily stared. James pulled out a hand to her,”Friends?”
After a second’s considerartion, Lily took it but then immediately withdrew.
“Um.. excuse me…”, she quickly took out her uniform from her trunk and left to change in her school robes.

Five minutes later, she found James was also dressed in his school robes. He was rumpling his hair again. He constantly did that to create an effect as if he had just got off a broomstick and more so, Lily knew, when she was around.
Lily snorted. “We have to patrol the train!”She told him. He nodded and joined her.
Patrolling around with James hadn’t been bad. Actually rather than being annoying he actually seemed pretty nice and seemed keen to be performing his duty. Suddenly James bumped with a sallow-skinned and hook-nosed boy with greasy black hair. It was Severus Snape
“Watch where you are going, Snivelly!” James said in a dangerous voice.
Severus threw him the deepest look of loathing and seemed horrified on seeing the shiny badge on James’s chest.
“Who made you Head Boy?” Severus demanded.
“Watch your mouth, Snivellus!” It was Lily who spoke this time. Severus looked at her and then his eyes moved to her badge too. He suddenly lost all colour from his face. It seemed he couldn’t believe what he saw. He looked ludicrously like a bat or, a vampire in this case.
“Move on. You’re blocking our way!” Lily said with contempt to her former best friend.
Severus didn’t move- he was still white in face. James pushed him roughly out of the way and moved on and so did Lily without as much as looking again at Severus.
“You have really pretty eyes,”James suddenly said, rounding on her.”And you are even prettier.”
For the first time, Lily smiled at him. ‘So this means we are friends now’ said to herself and urged James to move on and he did. They both knew they had a long day ahead of them- the new Head Boy and Head Girl.

Hogwarts Express began to move. All Lily Evans could see were the smiling faces of her mother and father on Platform Nine and Three Quarteres who had come to see her off to her final year at Hogwarts. Slowly, their faces and smiles became distant as they disappeared out of sight. Carefully lifting her trunk Lily began to move forwards to find a seat in the Prefects Carriage. She was the new Head Girl now. It had been a moment of pure joy when she had received her letter and the little badge, which was already pinned to her top. She was almost as happy as she had been on discovering that she was a witch. She moved forwards and at last found a compartment to sit. Nobody was there. She supposed that the Head Boy, whoever it was, would come any second now. She was placing her trunk under her seat when the compartment door slid open. A thin boy with untidy jet-black hair and spectacles entered.

“You?” Lily said before she could stop herself.
“I was about to ask you the same question!” James Potter replied. He was a little red in the face.
“Excuse me, but I’m the Head Girl!” Lily told him, hoping he would leave.
On the contrary, he pointed to a badge just like hers, which was pinned to his shirt. It read ‘Head Boy’.
“Not you!” Lily exclaimed disbelievingly.
James smiled and slowly placed his heavy trunk on the other seat and sat. He was still smiling and it was broader than before.
“Hmm.. so you and me, huh? Head Boy and Head Girl?” He laughed this time. He seemed disgustingly happy.
Lily frowned,”Yeah so?”
“You could sit down, you know. It wouldn’t hurt you,”James said.
There was a moment’s silence and James said,” Now, now Evans. It’s time to put aside our differences. Don’t you think? Else how on earth are we going to perform our duties together?”
Lily stared. James pulled out a hand to her,”Friends?”
After a second’s considerartion, Lily took it but then immediately withdrew.
“Um.. excuse me…”, she quickly took out her uniform from her trunk and left to change in her school robes.

Five minutes later, she found James was also dressed in his school robes. He was rumpling his hair again. He constantly did that to create an effect as if he had just got off a broomstick and more so, Lily knew, when she was around.
Lily snorted. “We have to patrol the train!”She told him. He nodded and joined her.
Patrolling around with James hadn’t been bad. Actually rather than being annoying he actually seemed pretty nice and seemed keen to be performing his duty. Suddenly James bumped with a sallow-skinned and hook-nosed boy with greasy black hair. It was Severus Snape
“Watch where you are going, Snivelly!” James said in a dangerous voice.
Severus threw him the deepest look of loathing and seemed horrified on seeing the shiny badge on James’s chest.
“Who made you Head Boy?” Severus demanded.
“Watch your mouth, Snivellus!” It was Lily who spoke this time. Severus looked at her and then his eyes moved to her badge too. He suddenly lost all colour from his face. It seemed he couldn’t believe what he saw. He looked ludicrously like a bat or, a vampire in this case.
“Move on. You’re blocking our way!” Lily said with contempt to her former best friend.
Severus didn’t move- he was still white in face. James pushed him roughly out of the way and moved on and so did Lily without as much as looking again at Severus.
“You have really pretty eyes,”James suddenly said, rounding on her.”And you are even prettier.”
For the first time, Lily smiled at him. ‘So this means we are friends now’ said to herself and urged James to move on and he did. They both knew they had a long day ahead of them- the new Head Boy and Head Girl.

did u herr in the news about a mothe and her daughter going to the park when right infront of her eys the mom saw taht her daught was being taken away ? if this was u .. what would u do ?

Basically there are two ramps for each side of the car to drive up and on top of the ramps is a flat platform where the car sits. There are no moving or electrical parts, you simply drive the car up the ramps onto the platform where you can slide underneath the car to do work and get enough clearance for removing/installing parts.

How much would one of these cost? The electrical car lifts cost too much money and heavy duty floor jacks plus wheel stops don’t seem to be doing it for me anymore.