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
No.
Anti-communist paranoia was the driving 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.
because if the grip would not be proper then you might get slip or may fall down. as there would be no friction between the shoe and the road.
Guestimate - 2 kg force?
Force - they cause the break pads to grip the break disks.
Anti-Communist paranoia
A spoiler is a wing on the rear of a car to Create down force for more grip when cornering at speed
strength New: The force of friction. When you apply the brakes, they grip the wheel, creating friction, which slows down the spinning.