Advertisements
Advertisements
प्रश्न
In Fig. a force F is applied in a direction passing through the pivoted point O of the body. Will the body rotate? Give reason to support your answer.
Advertisements
उत्तर
No, the body will not rotate as
Turning effect = Force × perpendicular distance of the force from the pivoted point.
= F × 0 = 0
perpendicular distance = 0 or force is parallel to the point of application of force.
APPEARS IN
संबंधित प्रश्न
The hand flour grinder is provided with a handle near the rim.
A potter turns his wheel by applying a force through the stick near the rim of wheel.
State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you?.
Explain the motion of a planet around the sun in a circular path.
Fig. 5 shows a uniform meter scale weighing 200 gf. Provided at its centre. Two weights 300 gf and 500 gf are suspended from the ruler as shown in the diagram. Calculate the resultant torque of the ruler and hence calculate the distance from mid-point where a 100 gf should be suspended to balance the meter scale.
What is meant by the term ‘moment of force’? If the moment of force is assigned a negative sign then will the turning tendency of the force be clockwise or anti-clockwise?
Write the expression for calculating the moment of force about a given point.
A uniform metre rule rests horizontally on a knife-edge at the 60 cm mark when a mass of 10 gram is suspended from one end. At which end must this mass be suspended? What is the mass of the rule?
Calculate the length of arm of couple, if a force of 13 N produces a moment of couple of 14.3 Nm.
A person standing in front of a cliff fires a gun and hears its echo after 3 s. If the speed of sound in air is 336 ms−1.
- Calculate the distance of the person from the cliff.
- After moving a certain distance from the cliff, he fires the gun again, and this time the echo is heard 1.5 s later than the first. Calculate the distance that the person moved.
