A box of bananas weighing `40.0N `rests on a horizontal surface is `0.40 ` and the coefficient of
Channel: Doubtnut
Date: 2020-07-26

A box of bananas weighing `40.0N `rests on a horizontal surface is `0.40 ` and the coefficient of kinetic friction is `0.20`  a. If no horizontal force is applied to the box and the box is at rest , how large is the friction force excered on the box ?  b. What is the magnitude of the friction forces if a monkey applies a horizontal force of `6.0 N ` to the box and the box is initial at rest?  c. What minimum horizontal force must the monkey apply to start the box in motion ?  d. What minimum horizontal force must the monkey apply to keep the box moving at constant velocity once it has been starts?  e. If the monkey applies a horizontal force of `18.0N ` What is the magnitude of the friction force and what is the box's acceleration ?