A horizontal force 20N is required to just slide a block of mass 6kg on a horizontal platform. The coefficient of limiting friction between the block and the platform is ?( g = 10 m/s).​

0.33

Explanation:

R= 60N

coefficient of limiting friction = F/R

= 20/60 = 0.33

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach