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A car of mass 1000kg is at the top of a 10 degree hill as shown. What is its gravitational potential energy relative to the bottom of the hill?.

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onyebuchinnaji

The gravitational potential energy of the  1000kg car relative to the bottom of the hill is 1666L (J).

Potential energy of the car

The gravitational potential energy of the car relative to the bottom of the hill is calculated as follows;

P.E = mgh

where;

  • h is the vertical height of the hill
  • m is mass of the car

Let the slant height of the hill,  = L

h = L sinθ

h = Lsin(10)

h = 0.17L

P.E = mg(0.17L)

P.E = 1000 x 9.8 x 0.17L

P.E = 1666L (J)

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