Advertisements
Advertisements
Question
State the effect of force F in of the following diagram.
Advertisements
Solution 1
Wheel turns about the axis of rotation i.e. about pivot on applying force.
Solution 2
In the given diagram, the force F is applied tangentially to the wheel at its edge. The effect of this force is:
-
Rotational Motion: The force F causes the wheel to rotate about its pivot. This is due to the creation of a torque, which depends on the magnitude of the force and the distance from the pivot.
-
Translational Motion (if friction permits): The wheel may also move forward (translate) if there is sufficient friction between the wheel and the surface.
Thus, the force causes rotation and possibly translation of the wheel.
APPEARS IN
RELATED QUESTIONS
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
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.
To obtain a given moment of force for turning a body, the force needed can be decreased by
State one way to decrease the moment of a given force about a given axis of rotation.
A uniform metre rule of weight 10gf is pivoted at its 0 mark.
What moment of force depresses the rule?
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.
State whether the moment of force is a scalar or vector quantity?
Write the expression for the moment of force about a given axis.
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.
