Chapter 9 Problems, Physics, Problem # 9.2 ,(The ratio between the length of the arms of lever is 4:1. How much force be applied to the longer arm so that a load of 20N suspended at the shorter arm can be balanced.)

 

Sindh Text Board Jamshoro 

Class X / SSC-ΙI丨Chapter # 9丨Problems

Problem #9.2

The ratio between the length of the arms of lever is 4:1. How much force be applied to the longer arm so that a load of 20N suspended at the shorter arm can be balanced.

Chapter 9 Problems, Physics, Problem #9.1 (An effort of 160 N, applied to a pulley system is able to lift a load of 750 N through a vertical height 0f 1.2 m. To do this, the effort moves a distance of 7.2 m. Calculate: (a) The mechanical advantage of the pulley system. (b) The efficiency.)

 

 Sindh Text Board Jamshoro 

Class X / SSC-ΙI丨Chapter # 9丨Problems

Problem #9.1

An effort of 160 N, applied to a pulley system is able to lift a load of 750 N through a vertical height 0f 1.2 m. To do this, the effort moves a distance of 7.2 m. Calculate:

(a) The mechanical advantage of the pulley system. 

(b) The efficiency.