A crate of bananas weighing 3000 N is shipped from South America to New York, where it is unloaded onto a
lever. The dock worker applies a force of 200 N on the
other side of the lever to lift the crate. What is the
mechanical advantage of the system?

Could someone . i have tried to solve myself but my calculation is off

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

Two manned satellites approaching one another at a relative speed of 0.550 m/s intend to dock. the first has a mass of 2.50 ✕ 103 kg, and the second a mass of 7.50 ✕ 103 kg. assume that the positive direction is directed from the second satellite towards the first satellite. (a) calculate the final velocity after docking, in the frame of reference in which the first satellite was originally at rest.(b) what is the loss of kinetic energy in this inelastic collision? (c) repeat both parts, in the frame of reference in which the second satellite was originally at rest. final velocity(d) loss of kinetic energy = ?