Advertisements
Advertisements
प्रश्न
The stone of hand flour grinder is provided with a handle near its rim. Give reason.
उत्तर
The stone of hand flour grinder is provided with a handle near its rim so that it can be rotated easily about the iron pivot at its centre by a small force applied at the handle.
APPEARS IN
संबंधित प्रश्न
SI. unit of moment of force is
State two effects of a force when applied on a body.
How does the effect of force differ when it is applied on a rigid body?
Write an expression for the change in momentum of a body of mass m moving with velocity v if v << c.
A car of mass 600 kg is moving with a speed of 10 m-1 while a scooter of mass 80 kg is moving with speed of 50 m s-1. which vehicle will require more force to stop it in the (1) same interval of time (2) same distance
State one way to reduce the moment of given force about a given axis of rotation.
A jack screw is provided with a long arm. Explain why?
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 couple of 15 N force acts on a rigid body, such that arm of couple is 85 cm. Calculate moment of couple in the SI system.
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.
