Question

Once I found a magic pencil...(complete the story with approximately more than 10 lines, need it urgently)

Answer 1

Answer:

Given :-

Mass of the block = 10 kg

Length on frictionless inclined plane = 5 m

Height from the bottom = 3 m

To Find :-

The work done in pushing a block.

Analysis :-

Here we are given with the mass and the height.

In order to find the work done substitute the given values from the questions accordingly such that work done is equal to mass into gravity into height.

Solution :-

We know that,

m = Mass

w = Work done

g = Gravity

h = Height

Using the formula,

\underline{\boxed{\sf Potential \ energy=Mass \times Gravity \times Height}}

Potential energy=Mass×Gravity×Height

Given that,

Mass (m) = 10 kg

Gravity (g) = 9.8 m/s

Height (h) = 3 m (no work done against friction)

Substituting their values,

⇒ w = mgh

⇒ w = 10 × 9.8 × 3

⇒ w = 98 × 3

⇒ w = 294 J

Therefore, the work done in pushing a block is (B) 294 J.

Answer 2

Answer:

once I found a magical pencil in a road side.. I don't know about the pencil owner so I take it home. After taking it to my home I want to write something but the pencil begin to flying. than the pencil say to me I help u to help the poor people. than he go outside the room .i saw a begger is there so he say the pencil for food . than in this way I help the poor people with the help of that pencil .

In this way I help the people ...