A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at a steady speed of 5.0 m/s for 8.0 m. Use g = 10 m/s2. Consider the system is the box and the Earth. Match the answers with questions

Q: In the diagram shown, mass 1 (m1) is 18.79 kg and the coefficients of static and kinetic friction…

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Q: A 60 kg block rests on a rough plane inclined at 30 deg with the horizontal. The coefficient of…

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Q: Problem 4: A coal car of mass m]= 3395 kg is rolling down the tracks at a velocity of v¡ = 4.3 m/s…

A: Givenm1=3395 kgm2=6196 kgvi=4.3 m/s

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A: Mass = 1.76 kg Force = 3.04 N Time = 2.08 sec Velocity =?

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Q: As a science fair project, you want to launch an 900 g model rocket straight up and hit a…

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A: We have some information in the question which is  m1 = 2.00 kg  m2 = 3.00 kg  m3 = 5.00 kg  and we…

Q: A block of mass M is attached to a spring of negligible mass and can slide on a horizontal surface…

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A: Given, mass of the student, m1 = 72 kgvelocity, v1i =1.53 ms velocity of skateboard and student…

Q: An electron is a subatomic particle (m = 9.11 x 1031 kg) that is subject to electric forces. An…

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Q: The figure shows Atwood's machine, in which two containers are connected by a cord (of negligible…

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A: The net force on the block due to the spring is given as F = -kx where k is the spring constant and…

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A: GivenMass of diver, mD=64.7 kgMass of diving board , mB=34.2 kg

Q: Which of the following types of forces do not involve momentum balance at steady state?     body…

A: Which of the following types of forces do not involve momentum balance at steady state?

Q: In the figure shown, mass m1 = 12.9 kg, m2 = 11.8 kg, and the surfaces are all frictionless. How…

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Q: A block of mass M is being pulled by a rope under tension that is angled 0 degrees above the…

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Q: e m e kN 9 m A.................... 12 m 12 m e kN e kN 9 m The commercial airliner is drawn here…

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Q: The figure shows two blocks connected by a cord (of negligible mass) that passes over a frictionless…

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Q: Figure (a) showsa mobile hanging from a ceiling; it consists of two metal pieces (m1 = 2.5 kg and m2…

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Q: One of the first ion engines on a commercial satellite used Xenon as a propellant and could eject…

A: The instantaneous thrust provided by the engine is, F=m·v Here, m· is the mass flow rate of the…

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Q: a tractor t is pulling two trailers m1 and m2 with a constant acceleration. t has A mass of 203 kg ,…

A: Given: The mass of the tractor is 203 kg. The mass m1 is 136 kg. The mass m2 is 146 kg. The…

Q: Two blocks, which can be modeled as point masses, are connected by a massless string which passes…

A: Given data:   M1=1.4 kg  M2=2.1 kg  r=0.85 m

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A: Retarding force, F = –50 N  Mass of the body, m = 20 kg  Initial velocity of the body, u = 15 m/s…

Q: The figure shows Atwood's machine, in which two containers are connected by a cord (of negligible…

A: m1=1.4 kg m2=3.1 kg Container 1 loses mass at a constant rate of 0.16 kg/s dm1dt=-0.16 kg/s We have…

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A: According to Newton's second law Fnet=maWhere Fnet is the net force, m is the total mass of the…

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Q: The figure shows two blocks connected by a cord (of negligible mass) that passes over a frictionless…

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Q: with an initial velocity of 2.36 m/s is rolling on rough surface slope and continues to accelerate…

A: Given mass m = 45.6 lbs = 45.6 × 0.4536 = 20.68 kg Initial velocity u = 2.36 m/s

Q: Which of the following best explains the greater difficulty in stopping a 1000-kg car moving at 174…

A: mass of first car (m) = 1000 kg Mass of second car (M) = 1000 kg Initial speed of first car (u) =…

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.