When does a machine act as (a) a force multiplier, (b) a speed multiplier. Can a machine act as a force multiplier and a speed multiplier simultaneously ?

Explain how the wheel and axle is a force multiplier

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.

Class-two levers are called force multipliers.

A pair of scissors is used to cut a piece of cloth by keeping it at a distance of 8.0 cm from its rivet and applying an effort of 10 kgf by fingers at a distance of 2.0 cm from the rivet. (a) Find : (i) the mechanical advantage of the scissors, and (ii) the load offered by the cloth. (b) How does the pair of scissors atc : as a force multiplier or as a speed multiplier ?

Name a machine which is used to : (a) multiply force, (ii) multiply speed, and (c) change the direction of force applied.

Name the type of single pulley that can act as a force multiplier. Draw a labelled diagram of the above named pulley.

Banana can be rapidly multiplied by

What is the ideal mechanical advantage of a single fixed pulley ? Can it be used as a force multiplier?

Give expressions in the following cases. (a) 11 added to 2 m (b) 11 subtracted from 2 m (c) 5 times y to which 3 is added (d) 5 times y from which 3 is subtracted (e) y is multiplied by - 8 (f) y is multiplied by - 8 and then 5 is added to the result (g) y is multiplied by 5 and the result is subtracted from 16 (h) y is multiplied by - 5 and the result is added to 16.

The smallest viable unit which can grow, multiply and form a plant in tissue culture is