The effort arm is equal to the load arm in a:
Complete the following sentences :
(a) In class II lever, effort arm is ____ than the load arm.
(b) Oars of a boat are _____ multipliers
A lever in which, the effort arm is always longer than the load arm is
When the effort arm is equal to the load arm the mechanical advantage is equal to one.
According to the “law of levers”, load×loadarm=effort×effortarm.
A man uses a crowbar of length 1.5m to raise a load of 75 kgf by putting a sharp edge below the bar at a distance of 1m from his hand. The load is at the opposite end of the effort. Calculate (i) load arm (ii) effort arm (iii) mechanical advantage and (iv) the effort needed.