Physics
Physics, 12.03.2020 22:40, nauticatyson9

In which of the following cases is the torque about the shoulder due to the weight of the arm the greatest?

Case 1: A person holds her arm at an angle of 30 degrees above the horizontal (hand is higher than the shoulder).
Case 2: A person holds her arm straight out parallel to the ground.
Case 3: A person holds her arm at an angle of 30 degrees below the horizontal (hand is lower than the shoulder).

If the person lets her arm swing freely from an initial straight-out parallel-to-the-ground position when is the angular acceleration of the arm about the shoulder the greatest?

a. Immediately after her arm begins to swing
b. When the arm is vertical
c. The angular acceleration is constant

answer
Answers: 3

Other questions on the subject: Physics

image
Physics, 22.06.2019 12:10, lks715
Point charges q1 = 51 µc and q2 = −27 µc are placed 1.0 m apart, with q2 on the right. what is the force (in n) on a third charge q3 = 19 µc placed midway between q1 and q2? (assume the positive direction is to the right. indicate the direction with the sign of your answer.)
Answers: 3
image
Physics, 22.06.2019 22:50, bigbrogamer
Which of the following statements correctly describes a transformer?
Answers: 3
image
Physics, 23.06.2019 01:00, ptrlvn01
The smallest particle of an element that retains its identity in a chemical reaction. true or false
Answers: 1
image
Physics, 23.06.2019 04:00, sullivanjakob
Preciso de ajuda na parte de termometria e tenho prova amanhã ajuda ae prf
Answers: 1
Do you know the correct answer?
In which of the following cases is the torque about the shoulder due to the weight of the arm the gr...

Questions in other subjects:

Konu
History, 05.10.2019 14:00
Konu
Mathematics, 05.10.2019 14:00
Konu
Mathematics, 05.10.2019 14:00