Mass and Velocity of the Body
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Given:
Mass of the body (m) = 40 grams = 0.04 kg
Velocity of the body (v) = 2 centimeters per second = 0.02 meters per second

Force on the Body
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The force on the body can be calculated using Newton's second law of motion, which states that the force acting on an object is equal to the product of its mass and acceleration.

In this case, since the body is moving with a constant velocity, its acceleration is zero. Therefore, the net force acting on the body is also zero.

Mathematically, the equation can be written as:

F = m * a

Since a = 0, the force (F) will be zero, i.e., F = 0.

Answer: The force on the body is 0 dynes.

Explanation:
Since the body is moving with a constant velocity on a frictionless table, there is no external force acting on it. The only force acting on the body is its weight due to gravity, but since the body is not accelerating vertically, the normal force exerted by the table cancels out the weight. Therefore, the net force on the body is zero.

Additional Information:
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It is worth noting that the weight of the body can be calculated using the equation:

Weight (W) = mass (m) * acceleration due to gravity (g)

where acceleration due to gravity (g) is approximately 9.8 m/s^2. In this case, the weight of the body would be:

W = 0.04 kg * 9.8 m/s^2 = 0.392 N

However, it is important to understand that weight and force are not the same. Weight is a type of force that occurs due to the gravitational attraction between objects, while force is a more general term that describes any interaction that can cause a change in motion.

In conclusion, the force on the body is 0 dynes since the body is moving with a constant velocity on a frictionless table.

Zero because the body is moving with constant speed, hence rate of change of velocity or acceleration is zero