Advertisements
Advertisements
प्रश्न
Name the force acting away from the centre of circular path.
उत्तर
Centrifugal force acts away from the centre of circular path.
APPEARS IN
संबंधित प्रश्न
In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east, as shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive or zero.
No work is done by a force if the body
What are the two kinds of mechanical energy?
Differentiate between energy and power.
State the SI unit of work.
The work done by a force acting obliquely is given by the formula : W = F cos θ ✕ s. What will happen to the work done if angle θ between the direction of force and motion of the body is increased gradually? Will it increase, decrease or remain constant.
A boy tries to push a truck parked on the roadside. The truck does not move at all. Another boy pushes a bicycle. The bicycle moves through a certain distance. In which case was the work done more : on the trick or on the bicycle? Give a reason to support your answer.
Name five appliances or machines which use an electric motor.
Why is the work done on an object moving with uniform circular motion zero?
Explain the difference between a uniform linear motion and a uniform circular motion.
How much energy is gained by a box of mass 20 kg when a man, runs carrying the box with a speed of 3 m/s-1 to catch the bus?
A force is applied on a body of mass 20 kg moving with a velocity of 40 ms−1. The body attains a velocity of 50 ms−1 in 2 seconds. Calculate the work done by the body.
________ is said to be done when a force is acting on it.
A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car
State whether work is done or not, by writing yes or no, in the following case:
A boy climbs up 20 stairs.