हिंदी

A Force F When Acts on a Body, Displace It by a Distance D in a Direction at an Angle θ with the Direction of the Force. Write Down the Expression for the Work Done by the Force. - Physics

Advertisements
Advertisements

प्रश्न

A force F when acts on a body, displace it by a distance d in a direction at an angle θ with the direction of the force. Write down the expression for the work done by the force.

एक पंक्ति में उत्तर
Advertisements

उत्तर

Work done by the force, W = Fd cos θ.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?

संबंधित प्रश्न

When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall

1) Name the force exerted by the table top

2) What is the direction of the force?


What are the S.I. and C.G.S units of work? How are they related? Establish the relationship.


A body, when acted upon by a force of 10 kgf, gets displaced by 0.5 m. Calculate the work done by the force, when the displacement is (i) in the direction of force, (ii) at an angle of 60° with the force, and (iii) normal to the force. (g = 10 N kg-1)


Is it possible that no transfer of energy may take place even when a force is applied to a body?


State the condition when a force produces
           (i) linear motion.
           (ii) rotational motion, in a body.


Name the force needed for circular motion. What is the direction of the force?


An engine does 54,000 J of work by exerting a force of 6000 N on it. What is the displacement in the direction of the force?


A man spends 7.4 kJ energy in displacing a body by 74 m in the direction in which he applies force, in 2.5 s. Calculate the power spent (in H.P) by the man.


A bullet fired against a window glass pane makes a hole in it without any cracks while a stone striking the same glass pane smashes it; explain with reason.


A boy weighing 50 kgf climbs up from the first floor at a height of 3 m above the ground to the third floor at a height of 9 m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg-1).


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×