Kinetic energy = 1/2 * m * V^2
K = 1/2 * 2kg * 4
Answer:
Option B is the correct answer.
Explanation:
Shear stress is the ratio of shear force to area.
We have
Shear stress = 3 N/mm² = 3 x 10⁶ N/m²
Area = Area of rectangle = 10 x 10⁻² x d = 0.1d
Shear force = 50000 N
Substituting

Width of beam = 16.67 cm
Option B is the correct answer.
Answer:
7
g/cm³
Explanation:
The formula for density is
. Let's apply the formula to the question:
= 7
g/cm³
kinetic energy to gravitational potential energy