Advertisements
Advertisements
प्रश्न
A spanner (or wrench) has a long handle. Why?
Advertisements
उत्तर
The long handle of the spanner creates a greater turning moment. The handles' ends are used with less force.
APPEARS IN
संबंधित प्रश्न
A brass ball is hanging from a stiff cotton thread. Draw a neat labeled diagram showing the forces acting on the brass ball and cotton thread
The S.I. unit of force is kgf. (kilogram-force)
State the S.I. unit of moment of force.
Find the moment of force of 20 N about an axis of rotation at distance 0.5 m from the force.
Name of S.I. unit of momentum.
A car of mass 600 kg is moving with a speed of 10 ms-1 while a scooter of mass 80 kg us moving with a speed of 50 ms-1. Compare their momentum.
Two forces each of magnitude 10 N act vertically upwards and downwards respectively at the two ends A and B of a uniform rod of length 4 m which is pivoted at its midpoint O as shown in the figure. Determine the magnitude of the resultant moment of forces about the pivot O.
Classify the following amongst contact and non-contact forces.
magnetic force
A meter scale is provided at 10 cm mark and is balanced by suspending 400 g from 0 cm mark (fig.). Calculate the mass of meter scale.
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).
