Question

would newton 2nd law of motion (F=ma) still be correct with frictional forces acting on a...

would newton 2nd law of motion (F=ma) still be correct with frictional forces acting on a system?
Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Newton's 2nd law states acceleration is proportional to the net force acting on an object. The net force is the vector sum of all the forces applied to the object. It is basically described as the unbalanced force.

Friction always acts in the direction opposing motion. This means if friction is present, it counteracts and cancels some of the force causing the motion (if the object is being accelerated). That means a reduced net force and a smaller acceleration.

In the case of an object already in motion (like a puck sliding on an ice surface) the force of friction is the unbalanced force. In this case the acceleration (slowing down) of the puck is proportional to the amount of friction. More friction and the puck slows to a stop faster. So newton's law applied for balanced for but as frinction force is unbalanced it is not corrected

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Q. Newton's second law is summarized in the equation F=ma. Which of the following is true...
Q. Newton's second law is summarized in the equation F=ma. Which of the following is true regarding this equation? A. To use this equation, you need to add all the forces together, accounting the different directions, before knowing what to put for F. B. It's impossible to get any information from this equation until you know, ahead of time, exact values for F, m, and a. C. To use this equation, you need to add all the forces together numerically,...
1. A person is mowing his lawn. He applies 100 Newton force downward at 37o with...
1. A person is mowing his lawn. He applies 100 Newton force downward at 37o with respect to the horizontal. The mawing machine has a mass of 20 kg, and the lawn presents a 40 Newton horizontal frictional force again the moving direction. (a) draw a free-body diagram for the mowing machine to show all forces it is subject to; (b) Establish a coordinate system of your choice; (c) Apply the Newton's 2nd Law to x-direction and y-direction respectively; (d)...
1. In Newton’s 2nd law experiment, a student measured the acceleration of the glider and the...
1. In Newton’s 2nd law experiment, a student measured the acceleration of the glider and the weight of the hanging mass. In this experiment, the air track was on and there was no drag force acting on the glider. The student results are shown below: F (N) a (m/s2) 0.100 0.100 0.200 0.250 0.300 0.450 0.400 0.600 0.500 0.800 a. Use Excel to plot the data and use the linear fit to find the slope. b. Use your findings to...
17. Action-reaction forces in third Newton’s law: a. Always act on the same object. b. Sometimes...
17. Action-reaction forces in third Newton’s law: a. Always act on the same object. b. Sometimes act of the same object. c. Always act on different objects. d. May or may not be antiparallel to each other. 18. If force exerted by horse on a cart is equal and opposite to the force exerted by cart on a horse, how does horse manage to move a cart? a. Horse has bigger mass than a cart. b. Horse still exerts greater...
Learning Goal: To understand how to apply the law of conservation of energy to situations with...
Learning Goal: To understand how to apply the law of conservation of energy to situations with and without nonconservative forces acting. The law of conservation of energy states the following: In an isolated system the total energy remains constant. If the objects within the system interact through gravitational and elastic forces only, then the total mechanical energy is conserved. The mechanical energy of a system is defined as the sum of kinetic energy K and potential energy U. For such...
a.) "for every action, there is an equal and opposite reaction." You plan to stan on...
a.) "for every action, there is an equal and opposite reaction." You plan to stan on a skateboard and throw an orange backward. someone tells you that since the orange is moving backward, the reaction is the skateboard moving forwards. how would you correct their statement? or is it already correct? b) "for every action, there is an equal and opposite reaction." a book sits on a desk. The Earth pulls the book down. What is the reaction to this...
ch 6 1: It is generally a good idea to gain an understanding of the "size"...
ch 6 1: It is generally a good idea to gain an understanding of the "size" of units. Consider the objects and calculate the kinetic energy of each one. A ladybug weighing 37.3 mg flies by your head at 3.83 km/h . ×10 J A 7.15 kg bowling ball slides (not rolls) down an alley at 17.5 km/h . J A car weighing 1260 kg moves at a speed of 49.5 km/h. 5: The graph shows the ?-directed force ??...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT