Recent content by physicshard22

The question doesn't give it

Did anyone get the answer so i can compare?

this is so confusing can you give me another hint?

so it would be r/r+h = 0.11? how do i solve with 2 unknowns?

h = 1r h' = 2r

i don't understand h/h' = 0.11? then what can i do?

Homework Statement Determine the distance from Earth's centre where the force of gravity acting on a space probe is only 11% of the force acting on the same probe at the Earth's surface. express your answer in terms of Earth's radius, Homework Equations F = Gm1m2/R^2The Attempt at a Solution i...

why is friction 425N

for coefficient of kinetic friction

Homework Statement A boy puts a 250kg elephant on a piece of carpeting and slides it across the floor by exerting a horizontal force of 425N on the elephant Homework Equations Ff = uKFn The Attempt at a Solution Fn = Fg Fnet = Fap - Ff Fnet = 425 - Ff ma = 425 - uKFn 250a =...

Homework Statement The force of gravity on an astronaut is 600N at the Earth's surface. what is the force of gravity acting on him at a distance of 10 times the Earth's radius? Homework Equations F = Fm1m2/r^2 The Attempt at a Solution F = Gm1m2/r^2 F = 600/11r^2 F = 4.96N...

Homework Statement A block of mass 8.0kg starting from rest is pulled along a rough horizontal tabletop by a constant force of 2N it is found that the block moves a distance of 3.0m in 6 seconds a) what is the acceleration? b) What is the net force acting on the block? Homework Equations...