Could someone please explain (c) and (d) in the question below and attachment. When I tried, I got 735 N, but that isn't the right answer. Thanks in advance for the help.
51 The diagram shows a person in an elevator pulling
on a rope that goes over a pulley and is attached
to the top of the elevator. The mass of the elevator
is 30.0 kg and that of the person is 70 kg.
a On a copy of the diagram, draw the forces on
the person.
b Draw the forces on the elevator.
c The elevator accelerates upwards at 0.50 m s−2.
Find the reaction force on the person from
the elevator fl oor.
d The force the person exerts on the elevator
fl oor is 300 N. Find the acceleration of the
elevator (g = 10 m s−2 ).
51 The diagram shows a person in an elevator pulling
on a rope that goes over a pulley and is attached
to the top of the elevator. The mass of the elevator
is 30.0 kg and that of the person is 70 kg.
a On a copy of the diagram, draw the forces on
the person.
b Draw the forces on the elevator.
c The elevator accelerates upwards at 0.50 m s−2.
Find the reaction force on the person from
the elevator fl oor.
d The force the person exerts on the elevator
fl oor is 300 N. Find the acceleration of the
elevator (g = 10 m s−2 ).
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