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PilotLPTM [1.2K]
3 years ago
12

Equilibrium occurs when : Answers:

Physics
1 answer:
prohojiy [21]3 years ago
6 0

Answer:

All are correct.

Explanation:

The equilibrium of an object occurs when:

1. The net force on the object is zero: When the number of forces acting on an object and the sum of all the forces is zero, then we say that the net force acting on the object is zero. It means that the net acceleration of the object is zero, it means the object is at rest or moving with constant velocity.

2. All forces acting on an object are balanced: When a number of forces acting on the object and the net force is zero it means all the forces are balanced. So, that the object has either zero velocity or moving with constant velocity.

3. The sum of +X forces on an object equals the sum of the - x forces: As the forces in + X axis direction is equal to the forces in - X axis direction, it means again the net force on the object is zero.

4. The sum of upward forces equal to the sum of downward forces: As the sum of forces in upwards direction is equal to the sum of forces in downward direction, it means the net force on the object is zero..

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Three boxes rest side-by-side on a smooth, horizontal floor. Their masses are 5.0 kg, 3.0 kg, and 2.0 kg, with the 3.0-kg mass i
Fed [463]

Answer:25 N

Explanation:

Given

mass of 5 , 3 & 2 kg blocks lie on floor

Force on 50 N pushes the 5 kg box

Let N_1 be the reaction on 2 kg box therefore

N_1=2\times a

where a is the acceleration of the system

N_2=reaction on 3 kg block by 5 kg block

N_2-N_1=3a

N_2=5a

Now for 5 kg block

F-N_2=5a

F=10a

a=\frac{F}{10}=5 m/s^2

Force exerted by 5 kg block on 3 kg block is

N_2=5\times 5=25 N

6 0
3 years ago
A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2. What amount of force acted on the ball?
Delvig [45]
Newton taught us that    Force = (mass) x (acceleration)

Force  =  (0.2) x (20) = <em>4 newtons</em> .

Something to think about:  The ball can only accelerate while the club-face
is in contact with it.  Once the ball leaves the club, it can't accelerate any more,
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4 0
3 years ago
When humans started launching rockets into outer space, they needed to make certain the rockets had enough power to escape Earth
GaryK [48]
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5 0
3 years ago
On an icy road, a 1100 kg car moving at 55 km/h strikes a 480 kg truck moving in the same direction at 37 km/h . The pair is soo
statuscvo [17]

Answer:

Speed of the wreckage = 49.29 km/hr

Explanation:

This question is solved simply by using the conservation of momentum law.

The momentum of the three moving bodies are calculated below:

Momentum of Car 1 : 1100 * 55 = 60500 kg.km/hr

Momentum of Truck : 480 * 37 = 17760 kg.km/hr

Momentum of Car 2 : 1300 * 49 = 63700 kg.km/hr

Total mass of all three vehicles: 1100 + 480 + 1300 = 2880 kg

The final momentum equals the initial momentum if it is conserved. Thus we have the following equation:

Final Momentum = Initial Momentum

Final Velocity * Total mass = Momentum of all three vehicles combined

Final Velocity * 2880 = 60500 + 17760 + 63700

Final Velocity = 49.29 km/hr

7 0
4 years ago
Read 2 more answers
Scientists were studying three different embryos to determine their relationship to humans. The notes about each embryo are show
Sholpan [36]

Answer:

The awnser is B

Explanation:

I took the test.

0 0
4 years ago
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