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April 21, 2014

Homework Help: physics

Posted by sara on Saturday, January 5, 2013 at 8:55pm.

Ceres is a dwarf planet located in the asteroid belt between the orbits of mars and Jupiter. the radius of Ceres is 4.76 x 10^5 m. suppose an astronauts stands on the surface of Ceres and drops a 0.85 kg hammer from a height of 1.25 m. the hammer takes 3.0 to reach the ground.
a) determine the gravitational field strength of Ceres at this height.(ans 0.28 n/kg)
b) determine the mass of Ceres. (ans 9.4 x 10^20 kg)
c) determine the gravitational field strength of Ceres at an altitude of 150 km above its surface. (ans 0.16 N/kg)

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