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
Moment of force = force × perpendicular distance of force – from the pivoted point.
The steering wheel of a vehicle is of large diameter.
A wheel of diameter 2 m can be rotated about an axis passing through its center by a moment of force equal to 2.0 Nm. What minimum force must be applied on its rim?
Classify the following amongst contact and non-contact force.
force of tension in a string
Name and define the S.I. and C.G.S. units of force. How are they related?
A uniform metre scale can be balanced at the 70.0 cm mark when a mark when a mass 0.05 kg is hung from the 94.0 cm mark
- draw a diagram of the arrangement
- Find the mass of the metre scale
Classify the following amongst contact and non-contact forces.
electrostatic force
A wheel of diameter 3 m is shown in fig. 2 with axle at 0. A force F = 8 N is applied at Q in the direction shown in figure. Calculate the moment of force about:
(i) centre o, and
(ii) point p.

Calculate the magnitude of the force of a couple, when the arm of the couple is 63 cm and the moment of the couple is 21 Nm.
