A 20 kg block is pushed up along an incline that makes an angle of 30 to the horizontal. The block starts moving with an initial speed of 4 m/s at the bottom of the incline, and stops after moving 8 m up the incline. Find the magnitude of the net force acting on the block during its entire motion. (Take the upward direction as positive direction)

A 20 kg block is pushed up along an incline that makes an angle of 30

1.	A 20 kg block is pushed up along an incline that makes an angle of 30 to the horizontal. The block starts moving with an initial speed of 4 m/s at the bottom of the incline, and stops after moving 8 m up the incline. Find the magnitude of the net force acting on the block during its entire motion. (Take the upward direction as positive direction)
Answer» BALANCING forces along the inclined PLANE, Fcosθ=mgsinθ+ff=80N;θ=30 o is frictional force.So, Fcos30 o =200sin30 o +80⇒F=205.55NExplanation:MARK me as BRAINLIST

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