Turning a nut with a spanner having a short handle is so easy than one with a long handle .

A spanner (or wrench) has a long handle. Why?

Why a spanner with a long handle is preferred to tighten screws in heavy vehicles ?

What is the need of along handle for a spanner?

A nut which can be broken by applying a force of 40 kgf, is broken by using a nut cracker having its handle 20 cm long, by placing it at a distance 2 cm from the hinge. Calculate the minimum force needed to break the nut.

Bag and suitcase have broad (wide) handle why ?

A mechanic can open a nut by applying a force of 150N while using a lever handle of length 40cm. How long a handle is required if he wants to open it by applying a force of only 50 N?

A nut cracker is used to crack a nut. In it nut is held in two arms at a distance 2 cm from the hinge and the handle of it is at a distance 25 cm from hinge. The force required to crack a walnut is 30 N. What is the minimum force required to crack it with the nut cracker. [2.4 N]

The front wall of a drawer in a cabinet is a provider with two symmetrical handles. The distance between the handles is l and the length (i.e. depth) of the drawer is a. The maximum value of the coefficient of friction between drawer and cabinet, for which drawer can be pulled out by applying a force on one handle perpendicular to the face of the drawer is : (Neglect the weight of the drawer)