Advertisements
Advertisements
प्रश्न
An effort is applied on the bigger wheel of a gear having 32 teeth. It is used to turn a wheel of 8 teeth. Where it is used.
Advertisements
उत्तर
The number of teeth in the driving wheel is nB = 32 and that in the driven wheel is nA = 8. Hence, this system is used to obtain the gain in speed
The Gain in speed = `n_B/n_A`= `32/8 = 4`
APPEARS IN
संबंधित प्रश्न
A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.
A force is applied on (i) a non-rigid body and (ii) a rigid body. How does the effect of the force differ in the above two cases?
Moment of force =............... × distance of force from the point of turning.
To obtain a given moment of force for turning a body, the force needed can be decreased by
How does the effect of force differ when it is applied on a non-rigid body?
State one way to obtain greater moment of a given force about a given axis of rotation.
Classify the following amongst contact and non-contact force.
force of tension in a string
The diagram shows two forces F1 = 5 N and F2 = 3N acting at point A and B of a rod pivoted at a point O, such that OA = 2m and OB = 4m

Calculate:
- Moment of force F1 about O
- Moment of force F2 about O
- Total moment of the two forces about O.
A jack screw is provided with a long arm. Explain why?
Assertion & Reasoning
- Assertion: The sum of the clockwise moments is equal to the sum of the anticlockwise moments.
- Reason: The principle of conservation of momentum is valid if the external force on the system is zero.
