6m
a block weighing 400 kg rests on a horizontal surface and supports on top of it,
another block of weight 100 kg as shown the block w, is attached to a vertical wall
by a string 6 m long. find the magnitude of the horizontal force p applied to the
lower block as shown in figure that shall be necessary so that slipping of w, occurs.
smow:
90'

Simon is writing a story about an astronaut whose spacecraft has been boarded by space pirates. the astronaut has her lucky penny in her hand behind her back as the space pirates break into the control room. she has just locked the controls so that the ship is accelerating in the direction of the control room’s ceiling. simon wants the astronaut to use the penny to hit a button on the control panel to turn off the lights and escape. the button is located a short distance behind and below the astronaut’s hands. how should simon use the theory of relativity to describe what the astronaut must do in order to hit the button?