Physics
A machine works as a
(i) force multiplier,
(ii) speed multiplier.
In each case state whether the velocity ratio is more than or less than 1.
Answer
(i) When a machine works as a force multiplier then the displacement of the load is less than the displacement of effort. Hence, the velocity ratio is more than 1.
(ii) When a machine works as a speed multiplier then the displacement of load is more than displacement of effort. Hence, the velocity ratio is less than 1.
Related Questions
Name a machine for each of the following use —
(a) to multiply the force,
(b) to change the point of application of force,
(c) to change the direction of force,
(d) to obtain the gain in speed.
How is mechanical advantage related to the velocity ratio for
(i) an ideal machine,
(ii) a practical machine?
How is mechanical advantage related to the velocity ratio for an actual machine? State whether the efficiency of such a machine is equal to 1, less than 1 or more than 1.
Write down a relation expressing the mechanical advantage of a lever.