Homework Help: Physics

Posted by Amy on Sunday, November 6, 2011 at 1:30pm.

A tractor pulls forward a moving plow with a force of 2.5*10^4N, which is just large enough to overcome friction.

A) what are the action, reaction forces between the tractor and the plow

B) Are these reaction, action forces equal in magnitude and opposite in direction? Will there be any acceleration? Explain.

My ans:

Action/Reaction forces are: Tractor pulling forward on plow and plow pulling backward on tractor..

Yes these forces are equal in size and opposite in direction.

However, I do not understand whether there will be acceleration or not. Does the question mean that there is no friction force now?

Physics - Henry, Sunday, November 6, 2011 at 5:34pm
I agree with your answers.

Fn = Fap - Ff = ma = 0. a = 0.
Since there is no change in velocity or
speed, there is no acceleration(a=0).
Fn = 25,000 - Ff = 0,
Ff = 25,000N.

Fn = Net force.
Fap = Force applied by tractor.
Ff = Force of friction.

Remember the force of the tractor just
barely overcomes the force of friction.

Answer this Question

Related Questions

physics - in a tug of war a jeep of a mass 1400kg and a tractor of a mass of ...
math - If A farmer uses a large tractor,she can plow a filed in eight hours. Her...
physics - A locomotive pulls a series of wagons. Which is the correct analysis ...
pre calc - it takes my father 3 hours to plow our cornfield with his new tractor...
Physics - A tractor of mass 5.0*10^3kg is used to tow a car of mass 2.5*10^3kg....
physics - A tractor pulls a loaded wagon with a constant force of 300 N. If the ...
Physics 12th grade - A farm tractor is pulling 2 pieces of equipment east, with ...
physics - A tug of war has started over a popular toy. One child pulls with a ...
Physics - A Federation starship (2500000 kg) uses its tractor beam to pull a ...
Physics - Two crewmen pull a boat through a lock, as shown in the figure. One ...

For Further Reading

First Name:
School Subject:
Answer: