Question

a block of mass 10kg a block of mass 10 kg is suspended at a distance from 28 of 20 cm from the centre of a uniform wire 1 metre long what force is required to balance it at centre of gravity by applying force at the end of the bar ​

Answer 1

Given: A block of mass 10 kg, distance 20 cm

To find: Force required to balance it at center of gravity by applying force at the end of the bar.

Solution:

• Now we have given that the mass of block is 10 kg and distance is 20 cm.

• So first we need to change the unit of distance to standard unit.

            Distance = 20 cm

            20/100 = 0.2 m

• Now we know that:

            force = mass / distance

• So putting the values in formula, we get:

            force = 10 kg / 0.2 m

            =100/2

           =50 kg/m

Answer:

             So the force requires is 50 kg/m.