Grade 12th passMechanics

A block of weight 100N is slowly slid up on the smooth incline of inclination 37° by person. Calculate the work done by the person in moving the block through a distance of 2.0 m if mass he driving force is (a) parallel to incline and (b) in horizontal direction .

pooja kapgate

9 Years agoGrade 12th pass

2 Answers

Vikas TU

9 Years ago

In parallel direction the force he would required => mgsin37 = > 100*3/5 => 300/5 => 60N.

Work done => 60 * 2 = 120 Joule.

In horizontal direction, the force would be => mgcos37 => 100*4/5 => 400/5 => 80 N.

srinivas

8 Years ago

the amount of work done would be same in both the cases, as work done is same in all cases i.e., even if it is lifted by same amount of vertical displacement.

m g h = m g l sin37° =120J

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A block of weight 100N is slowly slid up on the smooth incline of inclination 37° by person. Calculate the work done by the person in moving the block through a distance of 2.0 m if mass he driving force is (a) parallel to incline and (b) in horizontal direction .

pooja kapgate

2 Answers

Vikas TU

srinivas

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