Calculating Force and Magnitude of Pulling 400kg Cart up Hill

  • Thread starter Thread starter whitehorsey
  • Start date Start date
  • Tags Tags
    Force Magnitude
AI Thread Summary
When pulling a 400 kg cart up a hill with a force of 10 N, the force exerted by the cart on the person is equal to the force the person applies, according to Newton's third law. This means the cart exerts a force of 10 N back on the person. The discussion clarifies that the 4000 N mentioned is incorrect; it misinterprets the relationship defined by Newton's third law. The key takeaway is that for every action, there is an equal and opposite reaction, which applies to the forces between the person and the cart. Understanding these principles is crucial for accurately calculating forces in physics scenarios.
whitehorsey
Messages
188
Reaction score
0
1. A person is pulling a heavy cart up a hill. The cart has 400 kg of mass inside it. The person is pulling the cart with 10 N of force. What is the magnitude of the force on the person due to the cart?


3. Is it 4000N?
 
Physics news on Phys.org
What does Newtons third law say about people exerting a force on a cart?
 
CWatters said:
What does Newtons third law say about people exerting a force on a cart?

For every action there is an equal and opposite reaction.
 
Correct.

The question states that the person exerts a force of 10N on the cart so apply Newtons third law to work out how much force the cart exerts on the person.
 
Thanks!
 
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Thread 'Egg Drop Challenge! Need ideas for winning designs'

I was thinking using 2 purple mattress samples, and taping them together, I do want other ideas though, the main guidelines are; Must have a volume LESS than 1600 cubic centimeters, and CAN'T exceed 25 cm in ANY direction. Must be LESS than 1 kg. NO parachutes. NO glue or Tape can touch the egg. MUST be able to take egg out in less than 1 minute. Grade A large eggs will be used.
View full post »

Similar threads

Momentum: why don't the two carts become one?
Replies
32
Views
1K
Two carts connected with a spring -- working with forces and acceleration
Replies
14
Views
3K
A misconception I have about impulse formula interpretation
Replies
2
Views
2K
Coefficient of Friction question for a cart going down a wooden ramp
Replies
18
Views
3K
Push/Pull Force of wheeled cart on an incline
Replies
7
Views
4K
Impulse and Momentum: Ball and cart connected by a cord
Replies
24
Views
3K
How do we know how long the force is acting on an object?
Replies
4
Views
2K
Calculating Fan Force on a Cart: A Physics Problem Solution in 3.5 Seconds
Replies
8
Views
4K
What is the work done on cart by the string?
Replies
1
Views
2K
A father spins his child on a cart
Replies
10
Views
2K

Hot Threads

Recent Insights

Back
Top