4. A block that has a mass of 750 kg is suspended by a rope from the end of a construction crane. The crane is moving the block upward with an acceleration of 2.5 m/s²

a) Draw the free-body diagram of this situation. Label all of the forces with the appropriate
symbol. Be sure that the lengths of your arrows accurately represent the magnitudes of the forces.

b) What is the weight (Fg) of the block? Show your work. Label the weight in part a with the
magnitude you calculated here.

c) What is the net force acting on the block? Show your work.

Ateam of astronauts is on a mission to land on and explore a large asteroid. in addition to collecting samples and performing experiments, one of their tasks is to demonstrate the concept of the escape speed by throwing rocks straight up at various initial speeds. with what minimum initial speed vesc will the rocks need to be thrown in order for them never to "fall" back to the asteroid? assume that the asteroid is approximately spherical, with an average density p 3.84 x108 g/m3 and volume v 2.17 x 1012 m3 recall that the universal gravitational constant is g 6.67 x 10-11 n m2/kg2

Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?

Place me with this question is my last question