Question

A bucket of mass 4 kg is placed on a rough surface from a charge Q = 10 °C 1m apart. If friction co- efficient between bucket and ground is u = 0.5 then how much water in litre of density 1000kg/m3 and charged density 10 3c/m should be poured in the bucket so that bucket starts sliding​

Answer 1

Answer:

and:- 19N

Explanation:

Static friction is a self-adjusting force.

The limiting value of friction up to which the body stays at rest till it starts moving is given by, F

s

=μmg

where μ is the coefficient of static friction.

Below that limit, the frictional force is equal to the force applied.

Here F

s

=0.8×4×10=32N ; g=10m/s

2

Whereas force applied is 19N less than the limiting value of friction.

Hence Frictional force is 19N.