Advertisements
Advertisements
Question
One joule is the amount of work done when a force of ......... moves a body through a distance of .......
Advertisements
Solution
1N, 1m in its own direction
APPEARS IN
RELATED QUESTIONS
In a door, handle is provided ......... from the hinges.
It is easier to open the door by pushing it at its free end.
Name of S.I. unit of the rate of change in momentum.
Classify the following amongst contact and non-contact forces.
Frictional force
Calculate the resultant moment of forces about O and state its direction in fig.
State the effects that a force can produce. Given one example of each.
Two unlike forces (parallel) of 10 N and 25 N act at a distance of 12 cm. from each other. Find the point about which the body balance.
On a see-saw, two children of masses 30 kg and 50 kg are sitting on one side of it at distance 2 m and 2.5 m respectively, from its middle, where should a man of mass 74 kg sit to balance it?
The diagram shows wheel O pivoted at point A. Three equal forces F1, F2 and F3 act at point B on the wheel.
- Which force will produce maximum moment about A?
- Give a reason for your answer in (a).
A metal rod AB of length 80 cm is balanced at 45 cm from the end A with 100 gf weights suspended from the two ends.
- If this rod is cut at the center, C, then compare the weight of AC to the weight of BC. (Use >, < or =)
- Give a reason for your answer in (a).
