"Explain this to me: what force is needed at m (the handle) to lift 4 pounds at n? " (CM, I, 24v)
The user turns the handle to raise and lower the device. This screw device enables users to lift heavy weights with relatively little effort.
The lifting device's present-day relative is the manual car-jack, stored in the trunk of almost every vehicle. Auto-repair shops and parking structures also use similar devices to lift vehicles. Technological mechanism: Inverted Screw - with both left and right-handed threads
Size in millimeters: height: 600
length / depth: 200