Drag - a form of friction and lift.
force of friction in air and force of gravity downward.
Yes. -- Force when you lift something. -- Friction on the soles of your shoes when you walk. -- Gravitation all the time.
The input force needs to be greater than the force needed to lift the bale because some of the input force is typically lost due to inefficiencies in the machine or due to friction. Having a greater input force ensures that there is enough force to overcome these losses and still lift the bale.
Friction increases the effect of the input force
If friction is ignored, the ramp required to lift the road would be at a 45 degree angle. This is because at a 45 degree angle, the components of the gravitational force acting on the object perpendicular to the ramp would be equal to the force needed to lift the road.
To lift an object, you need to overcome its weight, whereas to start it sliding you need to overcome both its weight and the static friction force. The force needed to lift the object would be equal to its weight, whereas the force needed to start it sliding would be the weight of the object plus the product of the coefficient of static friction and the weight of the object. Therefore, the force needed to lift the object would be less than the force needed to start it sliding by the weight of the object multiplied by the coefficient of static friction.
Parasitic drag is a fluid force that opposes lift. It is caused by the friction and resistance of the air against the surface of the aircraft, slowing it down and requiring more power to maintain lift.
3300 salamander
The force that opposes lift is drag. Drag is the aerodynamic force that acts opposite to the direction of motion of an object moving through a fluid (such as air). It is caused by air resistance and friction as the object moves through the air.
A force pump uses mechanical force to push water upwards, while a lift pump relies on atmospheric pressure to lift water upwards. Force pumps are typically more powerful and can move water over greater distances. Lift pumps are simpler in design and require less maintenance.
No, lift acts perpendicular to the direction of the airflow over the wings, providing an upward force. Friction, on the other hand, acts parallel to the direction of motion and opposes the movement of the airplane through the air.