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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 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

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

Grade:11

2 Answers

Arya Rane
13 Points
4 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
14149 Points
4 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 
So 
W = FXCosQ 
= 20 Jule 
Hope ths will help 
Good Luck 

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