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PHYSICS 1L03 Lecture 6: set6-4Ave.pdf

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sangriawhale915

5 Feb 2015

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McMaster University

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Sixth series: questions on newton"s laws: a mother of mass 50 kg and her daughter of mass 25 kg are ice-skating. The weight of the crate is 296 n and the friction force between the crate and the surface is 90 n. what state of motion may the crate be: a man pushes a heavy crate. His push makes an angle of 30o with the horizontal, as shown. 50. 0 k : a ship is launched toward the water on a slipway making an angle of 5o with the horizontal direction. The coefficient of kinetic friction between the bottom of ship and the slipway is. The angle of the inclined is =15o. 1: two masses m1 = 1. 5 kg and m2 = 3. 0 kg are connected by a thin string running over a massless pulley. , while m2 hangs from the string. m1 slides on a 35o ramp with a coefficient of kinetic friction.

Related textbook solutions

Physics: Principles with Applications

7th Edition, 2013

ISBN: 9780321625922

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Related Questions

A person pushes horizontally with a force of 220 N on a 55 kg crate to move it across a level floor. The coefficient of kinetic friction between the crate and the floor is 0.35. What is the magnitude of (a) the frictional force and (b) the acceleration of the crate?

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Question is as follows:

Two wooden crates rest on topof one another. The smaller top crate has a mass of m1 = 22 kg andthe larger bottom crate has a mass of m2 = 91 kg. There is NOfriction between the crate and the floor, but the coefficient ofstatic friction between the two crates is Âµs = 0.84 and thecoefficient of kinetic friction between the two crates is Âµk =0.66. A massless rope is attached to the lower crate to pull ithorizontally to the right (which should be considered the positivedirection for this problem).

1) The rope is pulled with a tensionT = 466 N (which is small enough that the top crate will notslide). What is the acceleration of the small crate? Correct:Answer: 4.12m/s.

2) In the previous situation,what is the frictional force the lower crate exerts on the uppercrate?

Correct Answer: 90m/s

3) What is the maximum tension that thelower crate can be pulled at before the upper crate begins toslide? Correct Answer 930N

4) The tension is increased in the rope to1322 N causing the boxes to accelerate faster and the top box tobegin sliding. What is the acceleration of the uppercrate?

5) As the upper crate slides, what is theacceleration of the lower crate?