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Paraphin [41]
3 years ago
10

A cinder block is sitting on a platform 20m high. It weighs 79N.

Physics
1 answer:
zubka84 [21]3 years ago
5 0

Answer:

A cinder block is stationary it means it only has potential energy.

Explanation:

  • The cinder block is not moving so it has been storing the potential energy.
  • We can find the potential energy of the block by using the formula as:

                         Potential energy (PE) = mgh

where,

m= mass of the block

g= acceleration due to gravity

h= height of the block

Now,

                         PE= 79 × 20 J

                   or, PE = 1580 J

The energy stored by the block as potential energy is 1580 J.

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V_2 = \sqrt{V_1^2+2(h_1-h_2)}

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Replacing in the equation:

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