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A rectangular block of dimensions 2 m × 1 m × 1 m is floating in the water with immersing depth of 0.5 m. What is the weight of block (kN) if unit weight of water is 10 kN/cubic meter.
- a)5
- b)10
- c)15
- d)20
Correct answer is option 'B'. Can you explain this answer?
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A rectangular block of dimensions 2 m × 1 m × 1 m is float...
X 3 m x 4 m is initially at rest on a frictionless surface. A constant force of 100 N is applied horizontally to the block. What is the acceleration of the block?
To find the acceleration of the block, we need to use Newton's Second Law of Motion, which states that the force acting on an object is equal to the object's mass times its acceleration (F = ma).
First, we need to calculate the mass of the block. We can do this by using the formula for the volume of a rectangular block, which is:
V = l x w x h
where V is the volume, l is the length, w is the width, and h is the height.
In this case, V = 2 m x 3 m x 4 m = 24 m^3
We know that the density of the block is 800 kg/m^3, so we can calculate the mass as:
m = density x volume = 800 kg/m^3 x 24 m^3 = 19,200 kg
Now we can use Newton's Second Law to find the acceleration:
F = ma
100 N = 19,200 kg x a
a = 100 N / 19,200 kg
a = 0.0052 m/s^2
Therefore, the acceleration of the block is 0.0052 m/s^2.
To find the acceleration of the block, we need to use Newton's Second Law of Motion, which states that the force acting on an object is equal to the object's mass times its acceleration (F = ma).
First, we need to calculate the mass of the block. We can do this by using the formula for the volume of a rectangular block, which is:
V = l x w x h
where V is the volume, l is the length, w is the width, and h is the height.
In this case, V = 2 m x 3 m x 4 m = 24 m^3
We know that the density of the block is 800 kg/m^3, so we can calculate the mass as:
m = density x volume = 800 kg/m^3 x 24 m^3 = 19,200 kg
Now we can use Newton's Second Law to find the acceleration:
F = ma
100 N = 19,200 kg x a
a = 100 N / 19,200 kg
a = 0.0052 m/s^2
Therefore, the acceleration of the block is 0.0052 m/s^2.
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A rectangular block of dimensions 2 m × 1 m × 1 m is floating in the water with immersing depth of 0.5 m. What is the weight of block (kN) if unit weight of water is 10 kN/cubic meter.a)5b)10c)15d)20Correct answer is option 'B'. Can you explain this answer?
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