Adam applies an input force to the pulley as he pulls down to lift the object. as he does this, adam wonders about how the pulley is him. how is the pulley adam lift the object?
a. all of these answers are correct.
b. a fixed pulley lowers the amount of force needed to do the same amount of work.
c. a fixed pulley increases the distance over which the force is applied.
d. a fixed pulley adam change the direction of the effort force.

Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.