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A woman weighing 670 N does a pushup from her knees, as shown in the figure. (Figure 1) Part A What are the normal forces of the floor on each of her hands? Express your answer to two significant figures and include the appropriate units. Part B What are the normal forces of the floor on each of her knees? Express your answer to two significant figures and include the appropriate units.

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Ankit Lal
Ankit LalLv10
19 Sep 2020

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Researchers often use force plates to measure the forces that people exert against the floor during movement. A force plate works like a bathroom scale, but it keeps a record of how the reading changes with time. (Figure 1) shows the data from a force plate as a woman jumps straight up and then lands. Suppose that Delta t = 0.24s.

Image for Researchers often use force plates to measure the forces that people exert against the floor during movement.

A)

What was the vertical component of her acceleration during push-off? The positive direction is upward.

Express your answer to two significant figures and include the appropriate units. +

B)

What was the vertical component of her acceleration while in the air?

Express your answer to two significant figures and include the appropriate units.

C)

What was the vertical component of her acceleration during the landing?

Express your answer to two significant figures and include the appropriate units.

D)

What was her speed as her feet left the force plate?

Express your answer to two significant figures and include the appropriate units.

E)

How high did she jump?

17) A woman has a mass of 55kg.

Part A

What is her weight while standing on earth?

Express your answer to two significant figures and include the appropriate units.

       wEarth =      

 

Part B

What is her mass on the moon, where g=1.62m/s2 ?

Express your answer as an integer and include the appropriate units.

       mMoon =      

 

Part C

What is her weight on the moon?

Express your answer to two significant figures and include the appropriate units.

      wMoon =      

Part A

What is the amplitude of the oscillation shown in the figure? (Figure 1)

Express your answer to three significant figures and include the appropriate units.

Part B

What is the frequency of this oscillation?

Express your answer to two significant figures and include the appropriate units.

Part C

What is the phase constant?

Express your answer to two significant figures.

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