Asha lifts a doll from the floor and places it on a table. If the weight of the doll is known, what else does one need to know in order to calculate . the work Asha has done on the doll?

Options

A. The time required
B. Height of the table
C. Mass of the ball
D. Cost of the doll or the table

Answer

To calculate the work Asha has done on the doll, we need to consider the following steps:

### Step-by-Step Solution:

1. **Understand the Concept of Work**:
Work done (W) is defined as the product of the force (F) applied and the displacement (d) in the direction of the force. Mathematically, it is expressed as:
\[ W = F \times d \]

2. **Identify the Force**:
Since Asha is lifting the doll, the force she needs to apply is equal to the weight of the doll. The weight (W) can be calculated using the formula:
\[ F = m \times g \]
where:
- \( m \) is the mass of the doll,
- \( g \) is the acceleration due to gravity (approximately \( 9.81 \, \text{m/s}^2 \)).

3. **Determine the Displacement**:
To calculate the work done, we also need to know the displacement. In this case, the displacement is the height of the table (h) from the floor to the table.

4. **Combine the Information**:
The work done by Asha can then be calculated using the formula:
\[ W = F \times h = (m \times g) \times h \]

5. **Conclusion**:
Therefore, to calculate the work Asha has done on the doll, in addition to knowing the weight of the doll, we need to know the height of the table (h).

### Final Answer:
To calculate the work Asha has done on the doll, we need to know the height of the table.

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