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संबंधित प्रश्न
How is work done by a force measured when the force is in the direction of displacement?
Draw a simplified diagram of a lemon crusher, indicting of load and effort.
How is the unit horsepower related to the S.I. unit of power?
When a body moves in a circular path, how much work is done by the body? Give reason.
(Hint: The body is acted upon by the centripetal force.)
What are the S.I. and C.G.S units of work? How are they related? Establish the relationship.
A boy weighing 350 N climbs up 30 steps, each 20 cm high in 1 minute, Calculate:
- the work done and
- power spent.
State the condition when a force produces
(i) linear motion.
(ii) rotational motion, in a body.
What is a centripetal force?
What is the work done when the force on the object and the displacement of the object are perpendicular to each other?
What is the work done by the gravitational force on the moon that revolves around the earth?
