Purchase Solution

General Physics: Work and Newton's third law

Not what you're looking for?

Ask Custom Question

1. Nancy claims that she does more work in lifting her toddler each day than Atlas ever did when holding the whole world on his shoulders. is she correct?

2. Given Newton's third law of motion, why is there no "equal and opposite reaction" when you jump into the air?

Purchase this Solution
Solution Summary

Two questions are answered to develop concepts of work and action reaction forces.

Solution Preview

Please see the attached for full solution.

1. Nancy claims that she does more work in lifting her toddler each day than Atlas ever did when holding the whole world on his shoulders. is she correct?
Yes she is correct
In physics when we apply a force on a body and it get displaced we say we did work. Work done is directly proportional to the force applied and the displacement of the point of application of force in the direction of force. Thus if we apply a force F and the point at which force is acting is displaced by x in that direction then the work done W is mathematically given as
W = F*x
Thus the ...

Purchase this Solution
Free BrainMass Quizzes
Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Basic Physics

This quiz will test your knowledge about basic Physics.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

View More Free Quizzes
Related BrainMass Solutions

  • Velocity/basic/1/2

    zeroth Law of Motion (b) Newton's First Law of Motion (c) Newton's Second Law of Motion (d) Newton's Third Law of Motion A measure of the inertia ofa body is: (a) weight (b) velocity ( c) distance (d) mass The acceleration of an object

  • Apollo 13 and Newton's Laws

    42048 Apollo 13 and Newton's Laws I am trying to write 5 paragraphs on Apollo 13: -first paragraph: introduction -second paragraph: Newton's first law, balance forces=no change in speed (with 2 examples) -third paragraph: Newton's second law

  • Rocket Physics Launching Force

    The only thing that stops the rocket from from moving down is the force exerted on the rocket by the ground (Newton's third law). This force applied by the ground is there as long as the rocket pushes on the ground.

  • Physics

    F= ma Example- rocket propulsion is based on this law. Newton's third law of motion: According to this law "to every action there is always a equal and opposite reaction" i.e.

  • Simple Physics

    From Newton's third law: Method 1: Equations of motion. The only force that is exerted on the car during the notion is the friction force. The friction force always points in the opposite direction of the motion.

  • Work Done

    According to Hook's law, the force of the spring is , According to Newton's third law, the force stretching the spring is The work done is Work done is calculated by using Hook's Law and Newton's Third law.

  • Physics of a jump

    The physics of a jump can be looked at from two different perspectives (i) the work-energy concept and, (ii) momentum-impulse concept.

  • General conceptual physics help

    In our system (the engine and the car) there are no external forces (the force that the engine applies on the car is the same as the force the car applpies on the enegine - Newton's third law - So teh total internal force in our system is always zero.

  • What is the magnitude of the acceleration of gravity on the planet? A physics cart moves up along a smooth ramp.

    After we give the cart a push, only two forces act on it: gravity and the normal force that the ramp applies to the cart due to the weight of the cart (Nweton's third law).

View More Related Solutions