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How to Increase Friction | Science Class 4

In this video, you will learn all about How to Increase Friction. In cases where friction is desirable, we use methods to increase it. Some ways of increasing friction are discussed below. • Shoes and tyres of vehicles have grooves designed on them to increase friction. This gives a good grip on the road. • Sand and gravel is thrown on ground during rainy season to increase friction. This makes the ground less slippery. • Friction can also be increased by using brake pads in the brake system. How to Reduce Friction In cases where friction is not desirable, we try to reduce it. Some methods of reducing friction are discussed below. Polishing the Surface Surfaces are polished to remove unevenness on them. This makes them smooth and reduces friction. Lubricating the Surface Lubricants such as oil and grease applied between the two surfaces, forms a layer between them and reduces friction. Sprinkling Powder Powder is sprinkled on a carrom board to reduce friction, so that the counters can move smoothly over it. Streamlining Vehicles such as cars, aeroplanes, boats and ships are streamlined in order to reduce friction. Using Wheels and Ball Bearings Using wheels and ball bearings helps to reduce friction by reducing the area of the two surfaces in contact. This helps to minimise effort and save energy. Follow us on Instagram:   / login   Follow us on YouTube:    / @blueprintdigitalnr   Follow us on Facebook:   / blueprintedu   Buy Here – My Science Zone (Latest Version): https://blueprinteducation.co.in/pro/... My Science Zone Class 4 @Blueprint Digital