A block of mass 4 kg is placed on a rough horizontal plane. A time dependent horizontal force F = kt acts on the block (k = 2 N/s). Find the frictional force between the block and the plane at t = 2 second and t = 5 second (mu = 0.2)

A block of mass 4 kg is placed on a rough horizontal plane. A time dep

1.	A block of mass 4 kg is placed on a rough horizontal plane. A time dependent horizontal force F = kt acts on the block (k = 2 N/s). Find the frictional force between the block and the plane at t = 2 second and t = 5 second (mu = 0.2)
Answer» <html><body><p> </p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :When t=2sec F=4N<br/> `f_(ms)=mu" mg"=0.2xx4xx10=8N`<br/> `:. Fltf_(ms) :."friction"=4N`<br/> When t=5sec F=2(<a href="https://interviewquestions.tuteehub.com/tag/5-319454" style="font-weight:bold;" target="_blank" title="Click to know more about 5">5</a>)=<a href="https://interviewquestions.tuteehub.com/tag/10n-267183" style="font-weight:bold;" target="_blank" title="Click to know more about 10N">10N</a>,<br/> `Fgtf :." friction"=8N`</body></html>