The mass of a block made of certain material is 13.5 kg and its volume is `15 xx 10^(-3) m^3`.
What will be the upthrust on block while floating?
Take density of water = `1000 "kg m"^(-3)`

Explanation

To find the upthrust (or buoyant force) acting on a block while it is floating, we can use the principle of buoyancy, which states that the upthrust is equal to the weight of the fluid displaced by the block. When an object is floating, the upthrust is also equal to the weight of the object itself.

### Step-by-Step Solution:

1. **Identify the mass of the block**:
The mass of the block is given as \( m = 13.5 \, \text{kg} \).

2. **Calculate the weight of the block**:
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