Advertisements
Advertisements
Question
State the effect of force F in of the following diagram.
Advertisements
Solution
The ball moves in the direction of magnitude of force f and continues to move in that direction
APPEARS IN
RELATED QUESTIONS
What is the SI unit of the moment of force?
State the S.I. unit of moment of force.
State one way to decrease the moment of a given force about a given axis of rotation.
A body X of mass 5 kg is moving with velocity 20 m s-2 while another body Y of mass 20 kg is moving with velocity 5 m S-1. Compare the momentum of the two bodies.
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.
Define couple.
Give an example for each of the following uses of a machine:
to change the point of application of force
Write the expression for the moment of force about a given axis.
Calculate the minimum distance between point of application of force and axis of rotation of a rigid body, if a force 125 N produces a moment of force of 25.75 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.
