A metal plate `5 cm xx 5` cm rests on a layer of castor oil 1 mm thick whose coefficient of viscosity is `1.55 Nsm^(-2)` . Find the horizontal foce required to move the plate with a speed of 2 cm/s

Explanation

To solve the problem of finding the horizontal force required to move a metal plate resting on a layer of castor oil, we will use the formula for viscous force. Here are the steps:

### Step-by-Step Solution:

1. **Identify Given Values:**
- Area of the plate (A) = 5 cm × 5 cm = 25 cm²
- Thickness of the oil layer (dx) = 1 mm = 0.001 m
- Coefficient of viscosity (η) = 1.55 N·s/m²
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