Question

A desk with a mass of 45 kg rests on the floor. (a) If the coefficient of static friction between the desk and the floor is 0.45, what is the magnitude of the minimum horizontal force that a person must apply to start the desk moving? (b) If the drawers, with 17 kg mass, are removed before the desk is pushed, what is the new minimum magnitude?

Name: a desk with a mass of 45 kg rests on the floor a if the coefficient of static friction between the desk and the floor is 045 what is the magnitude of the minimum horizontal force that a person must ap
Uploaded: 2021-02-13T01:47:51-08:00
Duration: 4 min 1 s
Channel: Ivan Kochetkov
Description: a desk with a mass of 45 kg rests on the floor a if the coefficient of static friction between the desk and the floor is 045 what is the magnitude of the minimum horizontal force that a person must ap

          A desk with a mass of 45 kg rests on the floor.
(a) If the coefficient of static friction between the desk and the floor is 0.45, what is the magnitude
of the minimum horizontal force that a person must apply to start the desk moving?
(b) If the drawers, with 17 kg mass, are removed before the desk is pushed, what is the new
minimum magnitude?

Added by Kimberly M.

Fundamentals of Physics

David Halliday, Robert Resnick , Jearl… 10th Edition

Chapter 6

Instant Answer

Solved by Expert Ivan Kochetkov

02/13/2021

Step 1

This can be done by multiplying the coefficient of static friction (0.45) by the normal force acting on the desk. The normal force is equal to the weight of the desk, which is given as 45 kg * 9.8 m/s^2 (acceleration due to gravity). Show more…

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A desk with a mass of 45 kg rests on the floor. (a) If the coefficient of static friction between the desk and the floor is 0.45, what is the magnitude of the minimum horizontal force that a person must apply to start the desk moving? (b) If the drawers, with 17 kg mass, are removed before the desk is pushed, what is the new minimum magnitude?