Concept explainers
Here a stone is being accelerated vertically upward.
a. Draw force vectors to some suitable scale showing relative forces acting on the stone.
b. Which is the longer vector, and why?
(a)
To Draw: The force vectors to some suitable scale showing the relative forces acting on the stone
Explanation of Solution
W is the weight of the body which is acting downward
Where m is mass of the stone and g is gravitational acceleration
Tension on the string, acting as a upward force on the stone
The stone is moving with an acceleration a in upward direction, so the net upward force is F.
(b)
To Find: The longer vector among
Answer to Problem 48A
Explanation of Solution
Arrow of a vector denotes the direction and length of the vector tells about the magnitude. Longer the vector, greater its magnitude is.
Although
So, it is clear that
So, the magnitude of the upward tension is greater than the magnitude of downward weight.
Hence,
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Conceptual Physics: The High School Physics Program
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