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Motion In Straight Line

Question
CBSEENPH11017849
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A satellite orbits the earth at a height of 500 km from its surface. Calculate the P.E of the satellite.

Mass of the satellite is 300 kg,
Mass of the earth = 6 x 1024 kg
Radius of the Earth = 6.4 x 106 m
G = 6.67 x 10-11 N m2 kg-2

Solution

P.E of the satellite is given by, 
Potential space Energy space of space the space satellite comma space straight P. straight E space equals space minus GMm over straight r space space space space space space space space space space space space space space space space space space space space equals space fraction numerator negative left parenthesis 6.67 space straight x space 10 to the power of negative 11 end exponent right parenthesis space straight x space left parenthesis 6 space straight x 10 to the power of 24 right parenthesis space straight x space 300 over denominator 7 space straight x space 10 to the power of 6 end fraction space space space space space space space space space space space space space space space space space space space space equals space minus 17.4 space straight x space 10 to the power of 9 space straight J

Some More Questions From Motion in Straight Line Chapter

Can a train be taken a particle? Give an example in support of your answer.

 A particle is moving along curved line in space. Is the motion one dimensional?

State which of the following are examples of one, two or three dimensional motion: 

(a) A kite flying in the sky.

(b) The earth revolving around the sun. 

(c) A train moving along the equator of the earth in clockwise direction. 

(d) Accelerated motion of a particle in a straight line.

Define distance.

Define displacement.

Can magnitude of displacement be greater than distance travelled by particle?

A body is thrown with a velocity of 9.8 m/s in the vertical upward direction. What is the velocity after one second?

How does the displacement of a particle change, when reference point for the position is shifted?

A particle moves from A to B along three different paths. Is the displacement along three paths different?

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