Advertisements
Advertisements
प्रश्न
A body is provided at a point. A force of 20 N is applied at a distance of 40 cm from the pivot. Find the moment of force about the pivot.
उत्तर
Given, applied force, F = 20N
Distance From the pivot , d = 40cm = 0.4m
Torque = F x d = 20 x 0.4 = 8 Nm
APPEARS IN
संबंधित प्रश्न
A man having a box on his head, climbs up a slope and another man having an identical box walks the same distance on a levelled road.
Who does more work against the force of gravity and why?
State the condition when the work done by a force is positive. Explain with the help of examples.
Give an example when work done by the force of gravity acting on a body is zero even though the body gets displaced from its initial position.
Name the quality which is measured in Wh.
What do you mean by a centrifugal 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?
How much force is applied on a body when 150 J of work is done in displacing the body through a distance of 10 m in the direction of the force?
What happens to the power if the time for doing work is reduced from t second to t/10 second?
State the S.I. and C.G.S. units of energy. How are they related?
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.