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A man is standing on a platform that is connected to a pulley arrangement, as the drawing shows. By pulling upward on the rope with a force the man can raise the platform and himself. The total mass of the man plus the platform is 116 kg. What pulling force should the man apply to create an upward acceleration of 1.20 m/s2?
A pendulum consists of a 4.98kg mass on the end of a 0.873 m string. The mass is pulled aside so the string makes an initial angle with the vertical of 12.5o. The mass is then released with initial speed of 2.10m/s upward and perpendicular to the rop..
A bar AB of negligible mass and length 2 m balanced at its midpoint a 4 kg and 5 kg masses are suspended from both ends. A 4 kg mass is 0.4m away from the midpoint. At what point the mass of 5 kg is suspended to a bar keep the balance.
What is eccentricity of the transfer ellipse
A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of defensive linemen. Find the magnitude and direction of his average acceleration
Coherent light with wavelength 591 passes by two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright f..
At what distance from a backstop will a package need to be placed depending on its weight and knowing it has to hit the backdrop at a velocity of 66 in/sec on a 11 degree angle. What is distance for every 5 lbs of package weight.
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions, What is the resistance of the ion channel
you ar charged to work on reducing expenditures for a company.you think that the company can save considerable money on fuel costs by lowering the room temperature of the building for daily use, How much heat will be saved each morning
In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is initially at rest. What was the speed of the cue ball prior to the collision
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.675 s to reach the opposite tower, 20.0 m away. If a 1 meter length of ..
At a certain location, the Earth's magnetic field has a magnitude of 5.8×10?5T, Find the magnitude of the magnetic flux through the top of a desk at this location that measures 140cm by 90
A cyclist starts from rest and coasts down a 4.0?hill. The mass of the cyclist plus bicycle is 85 kg. Ignore air resistance and friction. How fast is the cyclist going
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