**A cart loaded with bricks has a total mass**

**of 26.2 kg and is pulled at constant speed by**

**a rope. The rope is inclined at 26.3**

**◦**

**above**

**the horizontal and the cart moves 23.9 m on**

**a horizontal floor. The coefficient of kinetic**

**friction between ground and cart is 0.3 .**

**The acceleration of gravity is 9.8 m/s**

**2**

**.**

**What is the normal force exerted on the**

**cart by the floor?**

**Answer in units of N.**

**Answer:**

Normal Force is simply the opposite of mg (mass x gravity). Thus normal force can be written as mg.

However, there is also a pulling force at an angle of 26.3 degrees.

You need to find the y component of this force which is the sin(26.3). Multiply this number by mg and you have your total Normal Force.