- #1
lsufan1988
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ok so i am completely lost on all this force stuff...help...please
An object is hung from a spring balance attached to the ceiling of an elevator cab. The balance reads 65 N when the elevator is standing still.
(a) What is the reading when the elevator is moving upward with a constant speed of 7.7 m/s?
(b) What is the reading when the elevator is moving upward with a speed of 7.7 m/s while decelerating at a rate of 1.8 m/s2?
and this one as well
A firefighter with a weight of 725 N slides down a vertical pole with an acceleration of 2.92 m/s2, directed downward.
(a) What are the magnitude and direction of the vertical force (use up as the positive direction) exerted by the pole on the firefighter?
(b) What are the magnitude and direction of the vertical force (use up as the positive direction) exerted by the firefighter on the pole?
An object is hung from a spring balance attached to the ceiling of an elevator cab. The balance reads 65 N when the elevator is standing still.
(a) What is the reading when the elevator is moving upward with a constant speed of 7.7 m/s?
(b) What is the reading when the elevator is moving upward with a speed of 7.7 m/s while decelerating at a rate of 1.8 m/s2?
and this one as well
A firefighter with a weight of 725 N slides down a vertical pole with an acceleration of 2.92 m/s2, directed downward.
(a) What are the magnitude and direction of the vertical force (use up as the positive direction) exerted by the pole on the firefighter?
(b) What are the magnitude and direction of the vertical force (use up as the positive direction) exerted by the firefighter on the pole?