The force required to lift 200 g of mass vertically against the force of gravity is expressed in

Options

A. Newton
B. gram force
C. kilogram force
D. all of these

Answer

To find the force required to lift a mass of 200 g vertically against the force of gravity, we can follow these steps:

### Step-by-Step Solution:

1. **Convert the mass from grams to kilograms**:
- The mass given is 200 g. To convert grams to kilograms, we use the conversion factor \(1 \text{ kg} = 1000 \text{ g}\).
- Therefore, \(200 \text{ g} = \frac{200}{1000} \text{ kg} = 0.2 \text{ kg}\).

2. **Calculate the weight of the mass**:
- The weight (W) of an object can be calculated using the formula:
\[ W = m \times g \]
where \(m\) is the mass in kilograms and \(g\) is the acceleration due to gravity. We will use \(g = 10 \text{ m/s}^2\) for simplicity.
- Substituting the values:
\[ W = 0.2 \text{ kg} \times 10 \text{ m/s}^2 = 2 \text{ N} \]

3. **Determine the force required to lift the mass**:
- To lift the mass vertically against gravity, the applied force must be greater than the weight of the mass. If we apply a force equal to the weight (2 N), the mass will not move; it will just remain in equilibrium.
- Therefore, the force required to lift the mass must be slightly greater than 2 N.

### Final Answer:
The force required to lift 200 g of mass vertically against the force of gravity is slightly greater than 2 Newtons.

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