Advertisements
Advertisements
Question
Thrust is the ............ force acting on a surface.
Solution
normal.
Thrust is the normal force acting on a surface.
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
Moment of force = force × perpendicular distance of force – from the pivoted point.
A tall building has wide foundations.
The stone of hand flour grinder is provided with a handle near its rim. Give reason.
A wheel of diameter 2 m is shown in the figure with the axle at O. A force F = 2 N is applied at B in the direction shown in the figure. Calculate the moment of force about
- the centre O, and
- the point A.
Classify the following amongst contact and non-contact forces.
magnetic force
What is the work done when no net force is applied on the body?
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.
A person standing in front of a cliff fires a gun and hears its echo after 3s. 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.
