Question

A 1.31 g samara -- the winged fruit of a maple tree -- falls toward the ground with a constant speed of 1.0 m/s (Figure 5-29).

I understand that acceleration equals zero, but I don't understand how to find the upward force need to keep the fruit at 1.0 m/s. Is kinematics necessary in this question?

Answers

drwls
If there is no acceleration, as is the case here, there must be an upward force that balances the weight, so that the net force is zero.

I assume you know how to calculate the weight when you know the mass.

The 1 m/s speed will not make a difference in your answer. It is what is called the termimal speed.
Anonymous
.0119 N

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