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3 years ago

List 3 additional real world examples that show work being done.

Physics

2 answers:

Usimov [2.4K]3 years ago

8 0

I am walking to the end of the room holding three textbooks.
Playing tug of war
Moving boxes to move out of your house

IrinaVladis [17]3 years ago

5 0

Answer:

Explanation:

Work done is defined as the product of force and the displacement in the direction of force.

W = F × D

Work is a scalar quantity and it's SI unit is joule.

Example

1. If we hold a book and move vertically, the work is done by me.

2. Push a cart and the cart moves some distance, work is done by me.

3. Pull a cart on an inclined plane.

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3 years ago

A 500-N weight sits on the small piston of a hydraulic machine. The small piston has area 2.0 cm2. If the large piston has area

weqwewe [10]

Answer:

W₂= 10000 N

Explanation:

Pascal´s Principle can be applied in the hydraulic press:

If we apply a small force (F1) on a small area piston A1, then, a pressure (P) is generated that is transmitted equally to all the particles of the liquid until it reaches a larger area piston and therefore a force (F2) can be exerted that is proportional to the area (A2) of the piston:

Pressure is defined as the force (F) applied per unit area (A)

P=F/A (N/m²)

P1=P2

$\frac{F_{1} }{A_{1} } = \frac{F_{2} }{A_{2} }$

$F_{2} = \frac{F_{1}*A_{2} }{A_{1}}$ Equation (1)

Data

W₁ = weight sits on the small piston

F₁ = W₁= 500 N

A₁ = 2.0 cm²

A₂ = 40 cm²

Calculation of the weight (W₂) can the large piston support

We replace data in the equation (1)

$F_{2} = \frac{(500)*(40) }{2}$

F₂ = 10000 N

W₂= F₂= 10000 N

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Answer:

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