Advertisements
Advertisements
प्रश्न
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
Advertisements
उत्तर
The work done by the coolie is zero because there is no displacement of’ the load in the direction of force, which he is applying vertically upwards.
संबंधित प्रश्न
No work is done by a force if the body
How much work is done when a force of 1 N moves a body through a distance of 1 m in its own direction?
Draw a neat labeled diagram to show the direction of two forces acting on a body to produce rotation in it. Also mark the point about which rotation takes place.
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
Why is less effort needed to lift a load over an inclined plane as compared to lifting the load directly?
An electric motor of power 100 W is used to drive the stirrer in a water bath. If 50% of the energy supplied to the motor is spent in stirring the water. Calculate the work done on the water in one minute.
The weights of two bodies are 2.0 N and 2.0 kgf respectively what is the mass of each body?
