|1 Crore+ students have signed up on EduRev. Have you?|
The diagram shows the path of a ball when kicked at point P and return to the ground again at S.Tell the point at which the ball has the maximum potential energy.
Consider the following statements
Statement I: Work is done when book is pushed across the table.
Statement II: Work is done when a heavy wall is pulled.
Q. Which of the following is correct about the statements?
work done is considered when a displacement is observed in the position of an object on application of a force.
Which of the following form of energy is required to move the wheeled trolley?
While pulling the sledge in snow, which type of force comes in action?
When a ball is thrown in the air upward it comes down after some time, because of
What is the unit of measurement of energy?
Which of the following activities involves the use of lever
(i) Using your arm to lift a hand bag
(ii) Using scissor to cut clothes
(iii) Using a wheel barrow to transfer tool
The lid of a jar is which kind of simple machine
Regarding lever, select the correct statement from the given below
(i) In beam balance, fulcrum is in the middle
(ii) A nutcracker is an example of third class lever
(iii) In tongs the, the fulcrum and the load are at two ends
(iv) Sea-saw is an example of first class lever
While loading of boxes on trucks ramp is used. The surface of the ramp is made smoother because, there would be less
In removing a nail from a wooden block using a hammer with nail remover, the effort, load and fulcrum positions can be shown as
A ship is heavier than an iron nail, but floats on the water surface, while nail sinks, because
What is an effort in lever action?
The head of an axe is wide at one end and pointed at the other end to help in cutting of wood. Here the head of the axe is an example of
The correct option is Option D.
A wedge is simply a triangular tool, often made of metal, wood, stone or plastic. It is thick on one end and tapers to a thin or sharp edge on the other end. Technically it is an inclined plane (or two inclined planes put together to form a triangle) that moves. A wedge may be attached to a handle to make it easier to use. It is used in cutting wood.
What are the different simple machines used in the fishing rod?
A hammer is being used as a lever to pull a nail out of piece of wood which of the following statement is false?
In a pair of scissors, identify the fulcrum, effort and load
A ball is rolled on from the hill top with four labeled portion as P, Q, R, and S, which portion it will have its maximum kinetic energy.
At position P the ball has potential energy (energy that an object has due to its position). When it starts rolling down, the potential energy changes into kinetic energy (energy that an object has due to its movement) and at point S, it will have maximum kinetic energy as compared to points R and Q.