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 doll
D. Cost of the doll

Answer

To calculate the work done by Asha in lifting the doll from the floor to the table, we need to consider the following:

### Step-by-Step Solution:

1. **Understanding Work Done**:
Work done (W) is defined as the product of the force (F) applied and the displacement (d) in the direction of the force. The formula for work done is:
\[ W = F \times d \]

2. **Identifying the Force**:
In this case, the force exerted by Asha is equal to the weight of the doll. The weight (W) can be calculated using the formula:
\[ W = m \times g \]
where:
- \( m \) is the mass of the doll,
- \( g \) is the acceleration due to gravity (approximately \( 9.81 \, \text{m/s}^2 \)).

3. **Determining the Displacement**:
The displacement in this scenario is the vertical distance the doll is lifted, which is the height of the table (h).

4. **Calculating Work Done**:
Substituting the values of force and displacement into the work formula, we get:
\[ W = (m \times g) \times h \]
Thus, to calculate the work done by Asha, we need to know:
- The weight of the doll (which is given),
- The height of the table (h).

### Conclusion:
To calculate the work Asha has done on the doll, we need to know the height of the table in addition to the weight of the doll.