A lamp with a mass m = 42.6 kg is hanging from wires as shown.The tension 1 in the vertical wire is

A) 210 N B) 417 N C) 570 N D) 360 N E) 730 N A) 210 N B) 417 N C) 570 N D) 360 N E) 730 N

Three blocks are connected by massless cords and hung by a third massless cord to a beam.Mass m1 = 2 m2 = 3 m3.Mass m1 is the lowest block and m3 is the highest.The tension in the cord between the two highest blocks is

A) 3m1 $\times$ g/2 B) m1 $\times$ g/2 C) m1 $\times$ g/6 D) 2m1 $\times$ g/3 E) 6m1 $\times$ g/11 A) 3m1 $\times$ g/2 B) m1 $\times$ g/2 C) m1 $\times$ g/6 D) 2m1 $\times$ g/3 E) 6m1 $\times$ g/11

For this problem,assume no friction.A mass m2 = 3.5 kg rests on a horizontal table and is attached by strings to masses m1 = 1.5 kg and m3 = 2.5 kg as shown.The masses m1 and m3 hang freely.The system is initially held at rest.After it is released,the acceleration of mass m2 will be

A) zero B) 1.3 m/s2 C) 5.2 m/s2 D) 8.7 m/s2 E) 9.8 m/s2 A) zero B) 1.3 m/s2 C) 5.2 m/s2 D) 8.7 m/s2 E) 9.8 m/s2

Exam 4: Newtons Laws

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You are riding an elevator that is accelerating upward at 2.20 m/s².You have a spring balance accurately calibrated in newtons.When you hang a mass of 10.0 kg on the balance,the reading of the balance is

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Question 41

Newton's law of inertia does not describe the behavior of objects

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Question 42

The word "normal," as it applies to forces,means

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Question 43

A 15-kg block sitting on a smooth table is connected to a free-hanging 5-kg mass by a stretchless,massless cord that passes over a small frictionless pulley.The acceleration of the two-block system is

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Question 44

A shopper steps on an escalator moving downward at a constant speed toward the bargain basement in a large department store.On his way down,the normal force exerted on him by the step of the escalator is

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Question 45

An inertial reference frame is one in which

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Question 46

The figure below shows two forces,F_{1< / sub> and F_{2< / sub>,acting on an object. Use the vector diagrams to answer the question.
-Which force vector best represents the resultant force on the object?}}

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Question 47

A horse exerts a force F on a cart,causing the cart to move with increasing speed.What force does the cart exert on the horse?

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Question 48

A book is placed on a flat horizontal table.The table exerts a normal force on the book.The origin of the normal force in terms of the fundamental forces is

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Question 49

A particle of mass 1.3 kg is sliding down a frictionless slope inclined at 30º to the horizontal.The acceleration of the particle down the slope is

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Question 50

If force (in N),length (in m),and time (in s)were considered to be the fundamental quantities,the units of mass would be

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Question 51

The SI unit of force is the

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Question 52

A lamp with a mass m = 42.6 kg is hanging from wires as shown.The tension ₁ in the vertical wire is

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Question 53

A particle has a mass of 6.0 $\times$ 10^-6 kg and a velocity of 800 m/s along the x axis when a force of 14.4 $\times$ 10^-5 N along the y axis acts on the particle at right angles to its velocity.The acceleration of the particle is

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Question 54

Three blocks are connected by massless cords and hung by a third massless cord to a beam.Mass m₁ = 2 m₂ = 3 m₃.Mass m₁ is the lowest block and m₃ is the highest.The tension in the cord between the two highest blocks is

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Question 55

For this problem,assume no friction.A mass m₂ = 3.5 kg rests on a horizontal table and is attached by strings to masses m₁= 1.5 kg and m₃= 2.5 kg as shown.The masses m₁ and m₃ hang freely.The system is initially held at rest.After it is released,the acceleration of mass m₂ will be

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Question 56

Which fundamental force holds the atoms together in a block of wood?

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Question 57

A man riding in an elevator has an apparent weight greater than his actual weight.Which one of the following statements could be true?

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Question 58

A body of weight w is in free fall near the surface of Earth.What force does the body exert on the Earth?

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Question 59

A body of weight w rests on the surface of Earth.What force does the body exert on Earth? (ignore Earth's rotation)

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Question 60

Showing 41 - 60 of 106

Exam 4: Newtons Laws

You are riding an elevator that is accelerating upward at 2.20 m/s2.You have a spring balance accurately calibrated in newtons.When you hang a mass of 10.0 kg on the balance,the reading of the balance is

Newton's law of inertia does not describe the behavior of objects

The word "normal," as it applies to forces,means

A 15-kg block sitting on a smooth table is connected to a free-hanging 5-kg mass by a stretchless,massless cord that passes over a small frictionless pulley.The acceleration of the two-block system is

A shopper steps on an escalator moving downward at a constant speed toward the bargain basement in a large department store.On his way down,the normal force exerted on him by the step of the escalator is

An inertial reference frame is one in which

The figure below shows two forces,F1< / sub> and F2< / sub>,acting on an object. Use the vector diagrams to answer the question. -Which force vector best represents the resultant force on the object?

A horse exerts a force F on a cart,causing the cart to move with increasing speed.What force does the cart exert on the horse?

A book is placed on a flat horizontal table.The table exerts a normal force on the book.The origin of the normal force in terms of the fundamental forces is

A particle of mass 1.3 kg is sliding down a frictionless slope inclined at 30º to the horizontal.The acceleration of the particle down the slope is

If force (in N),length (in m),and time (in s)were considered to be the fundamental quantities,the units of mass would be

The SI unit of force is the

A lamp with a mass m = 42.6 kg is hanging from wires as shown.The tension 1 in the vertical wire is

A particle has a mass of 6.0 ×\times× 10-6 kg and a velocity of 800 m/s along the x axis when a force of 14.4 ×\times× 10-5 N along the y axis acts on the particle at right angles to its velocity.The acceleration of the particle is

Three blocks are connected by massless cords and hung by a third massless cord to a beam.Mass m1 = 2 m2 = 3 m3.Mass m1 is the lowest block and m3 is the highest.The tension in the cord between the two highest blocks is

For this problem,assume no friction.A mass m2 = 3.5 kg rests on a horizontal table and is attached by strings to masses m1 = 1.5 kg and m3 = 2.5 kg as shown.The masses m1 and m3 hang freely.The system is initially held at rest.After it is released,the acceleration of mass m2 will be

Which fundamental force holds the atoms together in a block of wood?

A man riding in an elevator has an apparent weight greater than his actual weight.Which one of the following statements could be true?

A body of weight w is in free fall near the surface of Earth.What force does the body exert on the Earth?

A body of weight w rests on the surface of Earth.What force does the body exert on Earth? (ignore Earth's rotation)

Systems of Measurement

Motion in One Dimension

Motion in Two and Three Dimensions

Applications of Newtons Laws

Work and Energy

Conservation of Energy

Systems of Particles and Conservation of Linear Momentum

Rotation

Conservation of Angular Momentum

Gravity

Static Equilibrium and Elasticity

Fluids

Oscillations

Wave Motion

Superposition and Standing Waves

Temperature and the Kinetic Theory of Gases

Heat and the First Law of Thermodynamics

The Second Law of Thermodynamics

Thermal Properties and Processes

The Electric Field I: Discrete Charge Distributions

The Electric Field Ii: Continuous Charge Distributions

Electric Potential

Capacitance

Electric Current and Direct-Current Circuits

The Magnetic Field

Sources of the Magnetic Field

Magnetic Induction

Alternating-Current Circuits

Maxwells Equations and Electromagnetic Waves

Properties of Light

Optical Images

Interference and Diffraction

Wave Particle Duality and Quantum Physics

Applications of the Schrodinger Equation

Atoms

Molecules

Solids and the Theory of Conduction

Relativity

Nuclear Physics

Elementary Particles and the Beginning of the Universe

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You are riding an elevator that is accelerating upward at 2.20 m/s².You have a spring balance accurately calibrated in newtons.When you hang a mass of 10.0 kg on the balance,the reading of the balance is

The figure below shows two forces,F_{1< / sub> and F_{2< / sub>,acting on an object. Use the vector diagrams to answer the question.
-Which force vector best represents the resultant force on the object?}}

A lamp with a mass m = 42.6 kg is hanging from wires as shown.The tension ₁ in the vertical wire is

A particle has a mass of 6.0 $\times$ 10^-6 kg and a velocity of 800 m/s along the x axis when a force of 14.4 $\times$ 10^-5 N along the y axis acts on the particle at right angles to its velocity.The acceleration of the particle is

Three blocks are connected by massless cords and hung by a third massless cord to a beam.Mass m₁ = 2 m₂ = 3 m₃.Mass m₁ is the lowest block and m₃ is the highest.The tension in the cord between the two highest blocks is

For this problem,assume no friction.A mass m₂ = 3.5 kg rests on a horizontal table and is attached by strings to masses m₁= 1.5 kg and m₃= 2.5 kg as shown.The masses m₁ and m₃ hang freely.The system is initially held at rest.After it is released,the acceleration of mass m₂ will be