The force of gravity is stronger on earth than it is on the planet mars. if an astronaut travels to mars, what will happen to her mass when she arrives?

a. the mass of the astronaut will increase on mars.

b. the mass of the astronaut will decrease on mars.

c. the mass of the astronaut will be equal to her weight on earth.

d. the mass of the astronaut will stay the same as it is on earth.

The boy of mass 30 kg is at r1= 2 meters from the fulcrum. of the girl is 45 kg, at what r2 must she sit so that they are balanced ?

Name the non metal condut electricity

As you are trying to move a heavy box of mass m, you realize that it is too heavy for you to lift by yourself. there is no one around to , so you attach an ideal pulley to the box and a massless rope to the ceiling, which you wrap around the pulley. you pull up on the rope to lift the box. use g for the magnitude of the acceleration due to gravity and neglect friction forces. once you have pulled hard enough to start the box moving upward, what is the magnitude f of the upward force you must apply to the rope to start raising the box with constant velocity? express the magnitude of the force in terms of m, the mass of the box.