Also draw the free body diagram. 2. Two masses connected by a string are pulled across a horizontal frictionless surfacewith a horizontal force of 25 N. The first mass is 30 kg and the second mass is 12 kg.a) Determine the tension in the string and the acceleration of the masses.FA = 25 N12 kg30 kgb) Reverse the order of the two masses, as shown and solve the problem again.What is the acceleration? Did it increase, decrease, or remain the same?What is the tension? Did it increase, decrease, or remain the same?FA = 25 N30 kg12 kg

Answered: Image /qna-images/answer/b1e423b1-6063-4bae-9291-8948d10e7776.jpg

Answered: 2. Two masses connected by a string are…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter4: Forces In One Dimension

Section: Chapter Questions

Problem 82A

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. The Kingda Ka roller coaster in New Jersey is the world’s tallest ride of its kind. As the passenger cars are launched from rest at the start, they are accelerated uniformly to a speed of 57 m/s (128 mph) in just 3.5 s. (a) What is the acceleration experienced by passengers on this ride in m/s2? In g’s? (b) If a certain passenger has a mass of 65 kg, what is the force in newtons that acts on him during the launch phase of this ride? What is the force in pounds?
When Julia Child would cook an omelet, she would rapidly jostle the pan back and forth (Fig. P5.4). The egg would slosh back and forth in the pan as it cooked. Use Newtons laws to explain the eggs motion. FIGURE P5.4
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Integrated Concepts An elevator filled with passengers has a mass of 1700 kg. (a) The elevator accelerates upward from rest at a rate of 1.20 m/s2 for 1.50 s. Calculate the tension in the cable supporting the elevator. (b) The elevator continues upward at constant velocity for 8.50 s. What is the tension in the cable during this time? (c) The elevator decelerates at a rate of 0.600 m/s2 for 3.00 s. What is the tension in the cable during deceleration? (d) How high has the elevator moved above its original starting point, and what is its final velocity?
2. Two masses were connected by a frictionless pulley and is placed in an inclined plane with kinetic friction coefficient of 0.2. If we let mass m2 to move at a constant speed downwards, give the following: a. Draw the FBD and write the summation of all forces acting on the masses. b. Solve for mass m2 if mass mı = 4kg. c. Find the tension force of the string.
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An astronaut weighing 236 lbs on Earth is on a mission to the Moon and Mars. a.What would he weigh in newtons when he is on the Moon? The acceleration due to gravity on the Moon is one-sixth that on Earth? b. How much would he weigh in newtons when he is on Mars, where the acceleration due to gravity is 0.38 times that on Earth? c. What is his mass in kilograms on Earth?
1. A mass hanging from a string is 65.65 grams. What is the force pulling on the string due to gravity? answer for (1) the gravitational force pulling the string is 0.643 N. 2. This string will be accelerating a "carriage" that rides horizontally on a track. The carriage has a mass of 1415.18 grams. The total mass being accelerated will be the mass on the string plus the mass of the carriage. What will the acceleration of the system be? 3. If the carriage is accelerated horizontally (from rest) over 0.775 meters, what will the horizontal velocity at the end be? 4. If, after being accelerated over 0.775 meters, a ball is then dropped from the carriage (while it is moving) from a height of 1.65 meters, how far horizontally will the ball travel (relative to the point where it was dropped) before hitting the floor?

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