- #1
cs44167
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- Homework Statement
- A rigid beam of mass 7.78 kg and length 1.44 m is fixed at point P, around which the beam rotated (P is at the far leftmost point of the beam). What is torque on the beam due to gravity only?
- Relevant Equations
- Torque = r*F*sin (theta)
w = mg
I tried using r * f * sin theta and calculated this:
1.14 m * 9.80 m/s/s * 7.78 kg = 109.7 N*m
this was wrong; I needed three significant figures so I did 1.10E2 N*m which was also wrong.
Since the torque is due to gravity; would it be -1.10E2 N*m since it’s angle is -270° which is -1?
1.14 m * 9.80 m/s/s * 7.78 kg = 109.7 N*m
this was wrong; I needed three significant figures so I did 1.10E2 N*m which was also wrong.
Since the torque is due to gravity; would it be -1.10E2 N*m since it’s angle is -270° which is -1?