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nirvana33 [79]
3 years ago
5

If the forces are balanced what is the resulting acceleration

Physics
1 answer:
icang [17]3 years ago
3 0
There is no acceleration when an object has balanced forces on it. It either moves at a constant velocity or doesn't move at all
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A box of weight 135 N is attached to the end of a dangling spring, stretching the spring by 21.0 cm. What is the weight of an ob
Savatey [412]
The answer is b hope it helps
7 0
3 years ago
A box of weight w=2.0N accelerates down a rough plane that is inclined at an angle ϕ=30∘ above the horizontal, as shown (Figure
Nesterboy [21]

Answer:

<h2>The work done is 0.882 Joules.</h2>

Explanation:

To calculate the work, we need to find all forces that are involved in the movement.

As you can analyse, the body is the force that make the box to move, and the friction force is opposite to it, we cannot forget about the friction. So, we have to calculate the resultant force to this context.

F_{R}=W_{x}-F_{k}

So, to find W_{x} we use: W_{x}=W.sen\phi; where W=2N;\phi = 30\°

W_{x}=2N.sin30\°=1\frac{1}{2}N=1N

The friction force would be:

F_{k}=\mu_{k}N=(0.30)(1.7N)=0.51

Then, the resultant force is:

F_{R}=W_{x}-F_{k}

F_{R}=1N-0.51N=0.49N

Now, we calculate the work: W=F_{R} d

W=(0.49N)(1.8m)=0.882J

Therefore, the work done is 0.882 Joules.

7 0
4 years ago
Read 2 more answers
Plz solve this. plz plz plz plz simple machine ​
nalin [4]

Answer:

Explanation:

i.  CW moment = 10 N (10 cm) + 30 N (30 cm) - 60 N (40 cm) = - 1400 N-cm

ii.  ACW momenet = 60 N (40 cm) - 10 N (10 cm) + 30 N (30 cm) = 1400 N-cm

iii.  No. The lever is not balanced in the situation. Because the moment is ± 1400 N-cm.  if balance, the moment must be Zero.

iv.   the location of 10N by keeping the other loads unchanged to balance the lever is 150 cm

take moment from Δ (support)

60(40) = 10(x) + 30(30)

2400 = 10x + 900

10x = 2400 - 900

10x = 1500

x = 1500/10

x = 150 cm  

therefore, the location of 10N by keeping the other loads unchanged to balance the lever is 150 cm

5 0
3 years ago
Hi, please help me I need help.
sukhopar [10]

Explanation:

Trains that use magnetic levitation (maglev) are suspended above the track, which greatly reduces friction from the rails and allows the trains to travel between 250 and 300 miles per hour! Magnetic levitation uses attractive and repulsive magnetic forces to suspend and control the speeds and motion of the trains.

4 0
2 years ago
Iron filings were sprinkled around these two magnets. What do the iron filings
Sever21 [200]

Answer:

B. They show the pattern made by the magnetic field lines around the

magnets

Explanation:

Using iron fillings, the pattern of the magnetic field lines around a bar magnet can be known.

Magnetic field lines are the line of force around a bar magnet.

  • These iron fillings will trace the pattern of the magnetic field around the magnet.
  • The domains of the iron fillings begins to align and orient with that of the prevailing magnetic field around.
  • Those areas with the strongest force will attract more fillings and those far away will attract lesser fillings.
3 0
3 years ago
Read 2 more answers
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