Advertisements
Advertisements
Question
When is work said to be done by a force?
Advertisements
Solution
Work is said to be done when a force moves an object through a distance in its own direction.
APPEARS IN
RELATED QUESTIONS
Define the term ‘work input’ and ‘work output’ in relation to a machine.
Answer the following in short.
Mention any two methods by which we can take care of machines.
Give a reason for the following.
Machines are able to make our work convenient.
The diagram below shows a wheel barrow. Mark position of fulcrum F and draw arrows to show the directions of load L and effort E. What class of lever is the whell barrow? Give one more example of the same class of lever.
Define Velocity Ratio
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
How does a machine work?
A uniform metre scale is kept in equilibrium when supported at the 60 cm mark and a mass M is suspended from the 90 cm mark as shown in the figure. State with reasons, whether the weight of the scale is greater than, less than or equal to the weight of mass M.
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
Name some simple machines.
