Homework Help: physics

Posted by matt on Thursday, June 16, 2011 at 4:39am.

A mass is suspended on a spring scale. The scale shows a reading of 5N and stretches a distance of 0.2 meters from its relaxed length.
1)What is the spring constant of the scale?

)If this scale was taken to a planet that has a mass 4 times larger than the earth and a radius 4 times greater than the earth, what would the reading on the scale be when the mass was suspended on it?

2)If this scale was taken to a planet that has a mass 4 times larger than the earth and a radius 4 times greater than the earth, what would the reading on the scale be when the mass was suspended on it?

physics - drwls, Thursday, June 16, 2011 at 5:11am
1) The definition of spring constant is force divided by the change in length. Do the calculation.
2) The accleration of gravity at the surface of a spherical body is proportional its mass and inversely proportional to the square of the radius.
4/4^2 = 1/4 of the Earth's value of g. A given mass will stretch a spring scale 1/4 as much.

Answer this Question

Related Questions

Physics - A beaker of mass 1.2 kg containing 2.1 kg of water rests on a scale. A...
physics - Search: A block of steel (7900 kg/m3) is suspended from a spring scale...
Physics - A 10cm times 10cm times 10cm block of steel (rho _steel= 7900kg/m^{3...
Physics - A 10cm times 10cm times 10cm block of steel (rho _steel= 7900kg/m^{3...
Physics - A spring scale being used to measure the weight of an object reads 17....
physics - A spring scale being used to measure the weight of an object reads 12...
Physics - A 1.00-kg beaker containing 2.0 kg of oil (density = 916 kg/m3) rests ...
Science - If while the mass was hanging from a spring scale you pulled up ...
Physics - A spring scale being used to measure the weight of an object reads 17....
physics - Two students, Jahna, and Raul, re performing Experiment 1. To simplify...

For Further Reading

First Name:
School Subject:
Answer: