Advertisements
Advertisements
प्रश्न
An ox can apply a maximum force of 1000 N. It is taking part in a cart race and is able to pull the cart at a constant speed of 30 ms-1 while making its best effort. Calculate the power developed by the ox.
Advertisements
उत्तर
Given, force = 1000 N, velocity = 30 m/s-1
Power, P = Force × Velocity
P = 1000 × 30 = 30,000 W = 30 kW
APPEARS IN
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?
A body is moved in a direction opposite to the direction of force acting on it. State whether the work is done by the force or work is done against the force
1 kWh = ______ J.
A boy takes 3 minutes to lift a 20 litre water bucket from a 20 m deep well, while his father does it in 2 minutes. Compare:
- the work, and
- power developed by them.
What happens to the power if the time for doing work is reduced from t second to t/10 second?
Derive a relation between the S.I. and C.G.S. unit of force.
A coolie carries a load of 30 kgf through a distance of 500 m in 5 minutes while another coolie B carries the same load through the same distance in 10 minutes. Compare the
(i) work done, and
(ii) power developed. (Take: g = 10md−2)
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A car in neutral gear is coming down the slope.
