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Unlock the Secrets of Perfect Balance: Zero Torque and Static Equilibrium Demystified! 🤯🔍
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I discussed in detail about static equilibrium with real world examples.
Example discussed :
A 5.00-m-long diving board of negligible mass is supported by two pillars. One pillar is at the left end of the diving board, as shown in the sketch; the other is 1.50 m away. Find the forces exerted by the pillars when a 90.0-kg diver stands at the far end of the board.
A cat walks along a plank with mass M = 6.00 kg. The plank is supported by two sawhorses. The center of mass of the plank is a distance d1 = 0.850m to the left of saw horse B. When the cat is a distance d2 = 1.11 m to the right of saw horse B, the plank just begins to tip. What is the mass of the cat, m?
A hiker who has broken his forearm rigs a temporary sling using a cord
stretching from his shoulder to his hand. The cord holds the forearm
level and makes an angle of 40.00 with the horizontal where it attaches
to the hand. Considering the forearm and hand to be uniform, with a
total mass of 1.30 kg and a length of 0.300 m, find (a) the tension in
the cord and (b) the horizontal and vertical components of the force, i,
exerted by the humerus (the bone of the upper arm) on the radius and
ulna (the bones of the forearm).
An 85-kg person stands on a lightweight ladder, as shown in the sketch. The floor is rough; hence, it exerts both a normal force, n, and a frictional force, A, on the ladder. The wall, on the other hand, is frictionless; it exerts only a normal force, A. Using the dimensions given in the figure, find the magnitudes of f1 , f2, and f3.
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Timeline:
0:00 - Introduction
0:34 - Welcome
0:46 - Zero Torque and static equilibrium
7:38 - Example 1
13:27 - Example 2
16:29 - Real World Physics
23:00 - Example 3
26:53 - Example 4
30:32 - Goodbye
__________________________________________________________________________________
Presented By:
STEM baba
References: Physics by James S.walker
Example discussed :
A 5.00-m-long diving board of negligible mass is supported by two pillars. One pillar is at the left end of the diving board, as shown in the sketch; the other is 1.50 m away. Find the forces exerted by the pillars when a 90.0-kg diver stands at the far end of the board.
A cat walks along a plank with mass M = 6.00 kg. The plank is supported by two sawhorses. The center of mass of the plank is a distance d1 = 0.850m to the left of saw horse B. When the cat is a distance d2 = 1.11 m to the right of saw horse B, the plank just begins to tip. What is the mass of the cat, m?
A hiker who has broken his forearm rigs a temporary sling using a cord
stretching from his shoulder to his hand. The cord holds the forearm
level and makes an angle of 40.00 with the horizontal where it attaches
to the hand. Considering the forearm and hand to be uniform, with a
total mass of 1.30 kg and a length of 0.300 m, find (a) the tension in
the cord and (b) the horizontal and vertical components of the force, i,
exerted by the humerus (the bone of the upper arm) on the radius and
ulna (the bones of the forearm).
An 85-kg person stands on a lightweight ladder, as shown in the sketch. The floor is rough; hence, it exerts both a normal force, n, and a frictional force, A, on the ladder. The wall, on the other hand, is frictionless; it exerts only a normal force, A. Using the dimensions given in the figure, find the magnitudes of f1 , f2, and f3.
_____________________________________________________________________________________
Timeline:
0:00 - Introduction
0:34 - Welcome
0:46 - Zero Torque and static equilibrium
7:38 - Example 1
13:27 - Example 2
16:29 - Real World Physics
23:00 - Example 3
26:53 - Example 4
30:32 - Goodbye
__________________________________________________________________________________
Presented By:
STEM baba
References: Physics by James S.walker
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