friction
Grip is a combination of pressure and friction. The more pressure one exerts upon an object the greater the friction and then the better grip one would have on the object in hand. Same goes for anything that can grip like tires, shoes, etc. Another thing that affects grip is the pattern of the surface applying the pressure, different patterns will exert the force differently.
gravity means the force that keeps the force up on the ground and the grip on the ground are ruff
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The force between the tire and the road is called frictional force. This force allows the tire to grip the road surface and provide traction for the vehicle to move.
Guestimate - 2 kg force?
The actual force may be the same, but a screwdriver with a large HANDLE can be more effective in applying that force. You can grip it and apply force easier.
The good grip on shoes is due to friction, which is the force that resists relative motion between surfaces in contact. The design of the shoe's outsole and the materials it is made of play a direct role in increasing the friction between the shoe and the ground, providing good traction and grip.
A spoiler is a wing on the rear of a car to Create down force for more grip when cornering at speed
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strength New: The force of friction. When you apply the brakes, they grip the wheel, creating friction, which slows down the spinning.