Grade 11Mechanics

A body of mass 5 kg is placed at the origin, and can move only on the x-axis. A force of 10 N is
acting on it in a direction making an angle of o 60 with the x-axis and displaces it along the xaxis
by 4 metres. The work done by the force is

anirban

8 Years agoGrade 11

2 Answers

Arya Rane

6 Years ago

Theta = 60 °

Force = 10 Newton

Displacement = 4 meter

Work done = Force × Displacement × Cos / theta

W = 10 × 4 × 1 / 2

W = 40 × 1 / 2

W = 20 Joules

Vikas TU

6 Years ago

Dear student

One thing is not clear in the above explanation is , Here we have taken component of displacement in x direction ,

It is xCosQ

Q = 60 degree

W = FXCosQ

= 20 Jule

Hope ths will help

Good Luck

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A body of mass 5 kg is placed at the origin, and can move only on the x-axis. A force of 10 N isacting on it in a direction making an angle of o 60 with the x-axis and displaces it along the xaxisby 4 metres. The work done by the force is

anirban

2 Answers

Arya Rane

Vikas TU

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