{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}


day04potenergysht - m at perihelion(closest approach to...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Gravitation Potential Energy Problem Sheet 1. With what initial velocity must an object be projected vertically upward from the surface of the Earth, in order to rise to a height equal to the Earth’s radius. (Neglect air resistance and the rotation of the Earth) (7.9 x 10 3 m/s) 2. Calculate the change in gravitational potential energy for a 1.0 kg mass lifted 100. km above the Earth’s surface. (1.0 x 10 6 J) 3. The distance from the sun to the Earth varies from 1.47 x 10 11
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: m at perihelion (closest approach), to 1.52 x 10 11 m at aphelion (farthest distance away). The sun’s mass is 1.99 x 10 30 kg, the Earth’s mass is 5.98 x 10 24 kg. a) What is the maximum change in the Earth’s gravitational potential energy during one orbit of the sun? (1.8 x 10 32 J) b) At what point in its orbit is the Earth moving its fastest, and what is its maximum change in kinetic energy? (perihelion, 1.8 x 10 32 J) A:\sph4u1\chap6\day04potenergysht.doc...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online