Fill In the BlanksFor a given height, ………… the length l of the inclined plane, lesser will be the effort required.
One Word AnswersName one property of waves that do not change when the waves pass from one medium to another?
Short Answer TypeA force is applied in i) a non- rigid body and ii) a rigid body. How does the effect of the force differ in the above two cases?
A metallic ball is hanging by a string from a fixed support. Draw a neat labelled diagram showing the forces acting on the ball and the string.
Is it possible to have an accelerated motion with a constant speed? Explain.
Yes. The velocity of particle in circular motion is variable or the circular motion is accelerated even though the speed of particle is uniform.
The velocity vector is constant in magnitude but changing in direction. Since the direction changes, acceleration is not unifrom.
i) When does a force do work?
ii) What is the work done by the moon when it revolves around the Earth?Calculate the change in kinetic energy of a moving body if it’s velocity is reduced to 1/3rd of the initial velocity.
Switch
