A 60 kg body is pushed with just enough

Asked by admin @ 17/08/2021 in Science viewed by 260 People

A 60 kg body is pushed horizontally with just enough force to start it moving across a floor and the same force continues to act afterwards. the coefficient of static friction and sliding friction are 0.5 and 0.4 respectively. the acceleration of the body is

Answered by admin @ 17/08/2021

Thank you for asking the question
As we know that static friction = coefficient of static friction * normal reaction of the body
that is friction = (u)N
also N=(m)(g) =60* 10 = 600 N ( By just taking g= 10 m/s^2
static friction = 0.5 * 600 = 300 N
when the external force will be applied on body .it will be start moving so in this case kinetic friction= 0.4 * 600 = 240 N

so the net force will be difference of both type of friction = 300- 240 = 60 N
we know that
F= ma so
a=F/m
so by butting values 60/60 =1 m/s^2 (acceleration).

Earth has a mass of 5.97 x 1024 kg and a radius of 6.38 x 106 m, while saturn has a mass of 5.68 x 1026 kg and a radius of 6.03 x 107 m. find the weight of a 65.0 kg person at the following locations? a) on the surface of the earth. b) 1000 km above the surface of earth. c) on the surface of saturn. d) 1000 km above the surface of saturn.

Asked by maham237 @ 13/01/2021 in Physics viewed by 575 persons

A 60 kg body is pushed with just enough

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