Two boxes m1 and m2 are connected by a lightweight cord and sitting on a frictionless surface.A horizontal force of 66 N pulls on box m1 and then m2 is pulled along.If the acceleration of both boxes is 2.2 m/s2 and the mass of m1 is 12 kg,find the mass of m2.

A) 12 kg B) 18 kg C) 30 kg D) 48 kg E) 42 kg A) 12 kg B) 18 kg C) 30 kg D) 48 kg E) 42 kg

Exam 4: Newtons Laws

Explore all topics

A 6-kg block sitting on a smooth table is connected to a free-hanging 2-kg mass by a stretchless,massless cord that passes over a small frictionless pulley.The acceleration of the two-block system is

(Multiple Choice)

4.7/5

(40)

Question 21

A vertical rope is attached to an object that has a mass of 40.0 kg and is at rest.The tension in the rope needed to give the object an upward speed of 3.50 m/s in 0.700 s is

(Multiple Choice)

4.8/5

(29)

Question 22

Which of the following is a unit of force?

(Multiple Choice)

4.9/5

(42)

Question 23

The acceleration due to gravity on the moon is only about 1/6 of that on Earth.An astronaut whose weight on Earth is 600 N travels to the lunar surface.His mass as measured on the moon is

(Multiple Choice)

4.9/5

(29)

Question 24

A body moves with constant speed in a straight line.Which of the following statements must be true?

(Multiple Choice)

4.8/5

(35)

Question 25

Two tug-of-war teams are pulling on the ends of a rope,each team with a force of 1000 N.If the rope does not move,the tension in the rope is

(Multiple Choice)

5.0/5

(36)

Question 26

Two boxes m₁ and m₂ are connected by a lightweight cord and sitting on a frictionless surface.A horizontal force of 66 N pulls on box m₁ and then m₂ is pulled along.If the acceleration of both boxes is 2.2 m/s² and the mass of m₁ is 12 kg,find the mass of m₂.

(Multiple Choice)

4.8/5

(27)

Question 27

A ball of mass 2.0 kg is acted on by two forces, and .The acceleration vector of the mass is (in m/s²)

(Multiple Choice)

4.9/5

(36)

Question 28

If a force F is required to extend a spring a distance 5y,how far will it be extended by force 3F?

(Multiple Choice)

4.8/5

(32)

Question 29

A ball of mass 2.0 kg is acted on by two forces, and .At t = 0 s,the particle is at rest at the origin.The velocity vector at t = 2 s is

(Multiple Choice)

4.9/5

(38)

Question 30

If a force F is required to extend a spring by 20 cm,what force is required to extend it by 30 cm?

(Multiple Choice)

4.9/5

(28)

Question 31

Three forces, , ,and ,act on a mass of 4.2 kg.The forces are The magnitude of the net acceleration of the mass is

(Multiple Choice)

4.8/5

(35)

Question 32

A force of 3.0 N acts on a body along a direction 30º above the horizontal.In addition,there is a gravitational force of 4.0 N downward.The resultant force has a magnitude of

(Multiple Choice)

4.7/5

(33)

Question 33

A cricket batsman hits a ball with a bat.If the force with which the bat hits the ball is considered the action force,what is the reaction force?

(Multiple Choice)

4.8/5

(28)

Question 34

Two masses m₁ and m₂ (with m₂ > m₁)are connected by a massless rope hung over a frictionless light pulley.If the masses are released then the acceleration of m₂ in the downward direction is given by

(Multiple Choice)

4.7/5

(39)

Question 35

A large (15,000-kg)military helicopter lifts a 6000-kg truck straight up out of a danger zone with an acceleration of 4 m/s².Calculate the tension in the lifting cable.

(Multiple Choice)

5.0/5

(31)

Question 36

Spiral springs A and B are identical.When a weight of 12 N is fastened to the hook on A,the hook is lowered 2 cm.If a weight of 18 N is fastened to the hook on B,that hook is lowered

(Multiple Choice)

4.8/5

(31)

Question 37

In the cgs system,the units of force are

(Multiple Choice)

4.8/5

(39)

Question 38

An astronaut lands on an Earthlike planet and drops a small lead ball with a mass of 76.5 g from the top of her spaceship.The point of release is 18 m above the surface of the planet and the ball takes 2.5 s to reach the ground.The astronaut's mass on Earth is 68.5 kg.Her weight on the planet is

(Multiple Choice)

4.9/5

(29)

Question 39

A net force is exerted toward the east on an object that is initially at rest.In which direction does the object start to move?

(Multiple Choice)

4.9/5

(30)

Question 40

Showing 21 - 40 of 106

Exam 4: Newtons Laws

A 6-kg block sitting on a smooth table is connected to a free-hanging 2-kg mass by a stretchless,massless cord that passes over a small frictionless pulley.The acceleration of the two-block system is

A vertical rope is attached to an object that has a mass of 40.0 kg and is at rest.The tension in the rope needed to give the object an upward speed of 3.50 m/s in 0.700 s is

Which of the following is a unit of force?

The acceleration due to gravity on the moon is only about 1/6 of that on Earth.An astronaut whose weight on Earth is 600 N travels to the lunar surface.His mass as measured on the moon is

A body moves with constant speed in a straight line.Which of the following statements must be true?

Two tug-of-war teams are pulling on the ends of a rope,each team with a force of 1000 N.If the rope does not move,the tension in the rope is

Two boxes m1 and m2 are connected by a lightweight cord and sitting on a frictionless surface.A horizontal force of 66 N pulls on box m1 and then m2 is pulled along.If the acceleration of both boxes is 2.2 m/s2 and the mass of m1 is 12 kg,find the mass of m2.

A ball of mass 2.0 kg is acted on by two forces, and .The acceleration vector of the mass is (in m/s2)

If a force F is required to extend a spring a distance 5y,how far will it be extended by force 3F?

A ball of mass 2.0 kg is acted on by two forces, and .At t = 0 s,the particle is at rest at the origin.The velocity vector at t = 2 s is

If a force F is required to extend a spring by 20 cm,what force is required to extend it by 30 cm?

Three forces, , ,and ,act on a mass of 4.2 kg.The forces are The magnitude of the net acceleration of the mass is

A force of 3.0 N acts on a body along a direction 30º above the horizontal.In addition,there is a gravitational force of 4.0 N downward.The resultant force has a magnitude of

A cricket batsman hits a ball with a bat.If the force with which the bat hits the ball is considered the action force,what is the reaction force?

Two masses m1 and m2 (with m2 > m1)are connected by a massless rope hung over a frictionless light pulley.If the masses are released then the acceleration of m2 in the downward direction is given by

A large (15,000-kg)military helicopter lifts a 6000-kg truck straight up out of a danger zone with an acceleration of 4 m/s2.Calculate the tension in the lifting cable.

Spiral springs A and B are identical.When a weight of 12 N is fastened to the hook on A,the hook is lowered 2 cm.If a weight of 18 N is fastened to the hook on B,that hook is lowered

In the cgs system,the units of force are

An astronaut lands on an Earthlike planet and drops a small lead ball with a mass of 76.5 g from the top of her spaceship.The point of release is 18 m above the surface of the planet and the ball takes 2.5 s to reach the ground.The astronaut's mass on Earth is 68.5 kg.Her weight on the planet is

A net force is exerted toward the east on an object that is initially at rest.In which direction does the object start to move?

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

Filters

Two boxes m₁ and m₂ are connected by a lightweight cord and sitting on a frictionless surface.A horizontal force of 66 N pulls on box m₁ and then m₂ is pulled along.If the acceleration of both boxes is 2.2 m/s² and the mass of m₁ is 12 kg,find the mass of m₂.

A ball of mass 2.0 kg is acted on by two forces, and .The acceleration vector of the mass is (in m/s²)

Two masses m₁ and m₂ (with m₂ > m₁)are connected by a massless rope hung over a frictionless light pulley.If the masses are released then the acceleration of m₂ in the downward direction is given by

A large (15,000-kg)military helicopter lifts a 6000-kg truck straight up out of a danger zone with an acceleration of 4 m/s².Calculate the tension in the lifting cable.