If the mass of the earth and all objects on it were suddenly doubled, but the size remained the same, the acceleration due to gr
2 answers:
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Answer:
The acceleration of a boat if the resultant force on it is 4000 N and its mass is 1240 kg is 3.2 m/s².
Explanation:
Given
- Force F = 4000 N
- Mass m = 1240 kg
To determine
Acceleration a = ?
Important Tip:
- The acceleration of a boat can be found using the formula F = ma
Using the formula
where
- F is the force (N)
- m is the mass (kg)
- a is the acceleration (m/s²)
now substituting F = 4000, m = 1240 in the formula
Switch sides
Divide both sides by 1240
Simplify
m/s²
Therefore, the acceleration of a boat if the resultant force on it is 4000 N and its mass is 1240 kg is 3.2 m/s².
Answer:
I = 2.667 kg m²
Explanation:
The moment of inertia of a body can be calculated by the expression
I = ∫ L² dm
For high symmetry bodies the expressions of the moment of inertia are tabulated, for a rod with its axis of rotation at its midpoint it is
I = m L²
let's calculate
I = 2 4²
I = 2.667 kg m²