9. In the pulley system shown, all the pulleys are massless andfrictionless and the rope is of negligible mass, Aristotle wanted toraise the 262-newton weight to a height of 3.00 meters.(a) Find the magnitude of force F he needed to pull on the rope tomove the weight upward with a constant velocity.(b) What was the mechanical advantage of the pulley system?(c) How far did he have to move his end of the rope?(d) How much work did he do?(e) How much work was done on the weight?262 N

A 262 N weight is attached via ropes to a pulley. This pulley is in turn attached to another bigger…

Answered: 9. In the pulley system shown, all the…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Similar questions

Objects with masses m1=15.0kg and m2=6.0 kg are connected by a light string that passes over a frictionless pulley as in the figure below. Find the final speed of the blocks when the block m1 moves down a distance of 1.3 m. Assume that the system starts from rest. (Use conservation of energy)
A 45.5lbs ball with an initial velocity of 236m/s is rolling on the rough surface slope and continues to accelerate at .896m/s^2, the slope has kinetic friction of 285N. How long would it take for the ball to stop? A 62.3kg astronaut throws a 2.20 lbs package with an acceleration of 0.98m/s squared. If the astronaut was pushed back with a distance of 3.25m, how much farther is the package from the starting position? How long has it been since the astronaut pushed the package?
7. A car of mass 1500kg is pulling a trailer of mass 750 kg up a straight hill of length 800 m inclined at an angle of arcsin(0.08) to the horizontal. The resistances to the motion of the car and trailer ure 400 N and 200 N respectively. The car and trailer are connected by a light rigid tow-bar. The car and trailer have speed 30m * s ^ - 1 at the bottom of the hill and 20m * s ^ - 1 at the top of the hill, After reaching the top of the hill the system consisting of the car and trailer travels along a straight level road. The driving force of the car's engine is 2400 N Find the acceleration of the system and the tension in 8. and the resistances to motion are unchanged. the tow-bar.
Three friends ride a Ferris wheel with a diameter of 41m. Their combined mass with each car of the Ferris wheel is 391kg. When their car is at position A, the steel support applies 671N force at the car at an angle of 40degrees with the horizontal. What is the speed of the cars?
Cathy just rebuilt the engine in her car (mcar = 1,200 kg) and the rebuilt engine can supply 72,900 W of power, if all the power from the engine goes into moving the car, how much time would it take Cathy’s car to go from 0 to 27 m/s on a flat, horizontal road?
An applied force of 14.4 N acts on a 2.50 kg mass that is initiallyt at rest. over a distance 2.09 m the object changes its kinetic energy by 19.3 j. what is the coefficient of kinetic friction?
A body of mass 1.68 kg is at rest and subjected to a force of 11.91 N. Find the kinetic energy at the end of 4 s. No unit is required for the final answer.
Mass blocks m1=3.40 kg and m2=8.50 kg are initially tied by a light string with a compressed spring in between. They sit on a smooth horizontal plane, After the string is cut, block m2 moves at 2 m/s to the right. (a)What is the potential energy stored in the spring before the string is cut? Answer: (b)How much does the center-of-mass of the two block system move in 4.30s counting from the moment the tie is cut? Answer: m. 2.00 m/s m2 m2 m1 m1 Before After
Consider a hoop of mass 3.1 kg and radius 0.52 m that rolls without slipping down an incline. The hoop starts at rest from a height h = 2.7 m above the bottom of the incline and then rolls to the bottom.

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