Hopefully this clarifies things. The position remains unchanged over the span of 5 seconds, which indicates that it is at rest while time continues to pass. When the slope turns negative, it illustrates that the bear is moving backward, thus changing its direction.
To determine stress, we utilize the formula Stress = Force / Area. In this scenario, the force exerted by a person weighing 85 kg on the stool is calculated as F = mg = 85 kg * 9.8 m/s² = 833 N. Next, we find the total area of the three legs: A = 3 π (D/2)² = 3 π (2.5 x 10^-2 / 2)² = 1.4726 x 10^-3 m². Substituting into the equation gives Stress = 833 N / 1.4726 x 10^-3 m² = 5.656 x 10^5 N/m². To find strain, we apply the formula strain = Stress / Young’s modulus, with wood having Y = 1.3 x 10^10 N/m². Thus, strain = 5.656 x 10^5 N/m² / 1.3 x 10^10 N/m² = 4.35 x 10^-5 = 0.00435%.
This indicates that the legs will shorten by 0.00435%
Answer:
The cube's mass is calculated to be 420.8 kg.
Explanation:
Given that,
Edge length = 38.9 cm
Density 
We need to determine the cube's volume
Using the volume formula
Next, we need to calculate the cube's mass
Employing the density formula
Consequently, the cube's mass is determined to be 420.8 kg.
